[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/wfr_5601.png]]
[[caption-width-right:200:How will you answer The Call?]]

A [[{{MMORPG}} Massively Multiplayer Online]] ThirdPersonShooter by Canadian developer Digital Extremes that vastly expands on the gameplay, story and concepts introduced in the 2008 third person action game VideoGame/DarkSector and is considered by the dev team to be [[WhatCouldHaveBeen everything that the latter game should have been]].

The future is here, [[CrapsackWorld and everything sucks.]] [[AfterTheEnd Mankind as we know it is long gone]]. [[GreatOffscreenWar The aftermath of the Old War]] has scattered the [[PlayerCharacter Tenno]] across the known universe. These masters of the blade, the gun and the mighty [[{{Precursors}} Orokin]] [[PoweredArmor battle suit]] known as the [[TitleDrop Warframe]] lie dormant in cryosleep.

The [[ANaziByAnyOtherName fascist, militaristic]] Grineer Empire is subjugating and crushing its way through the Solar System with [[CloneArmy a flood of degenerating clones]], sustained by [[ScienceIsBad perverted science]]. Humanity lives in terror of the Queens and their cronies, who rule with an iron fist, and slaughter and destroy with impunity. Anything they can't annihilate or rule is bought and sold by the Corpus, a [[MachineWorship machine-worshiping]] proto-MegaCorp of [[CorruptCorporateExecutive backstabbing sadists who'll kill each other for a few credits,]] who run the interplanetary Solar Rails and seek to recover ancient artifacts at any cost - be it their own lives, or anything or anyone that stands in their way, enslaving populations and making profit from their endless proxy wars. And what the Corpus can't buy is infected by the virulent and ancient [[TheVirus Technocyte Plague]] that preys on both, twisting them into [[ZombieApocalypse horrifying Infested that exist only to destroy, consume and assimilate]].

In response, the mysterious [[VoiceWithAnInternetConnection Lotus]] begins reactivating the Tenno en masse to free the solar system, protecting the helpless and stealing back Orokin artifacts each faction has hoarded.

The Tenno must [[CoOpMultiplayer band together]] against the hostile factions. They must steal, kill and sabotage to reclaim their Origin system while [[EscortMission saving]] any of their number that fall into enemy hands. Each mission is a fast-paced PvE shoot-and-slash romp, with both combat forms flowing seamlessly together. There are no bots: if you have no teammates you're forced to go alone and stealth becomes the better part of valor. Between missions you can upgrade your weapons or manufacture new ones. The titular Warframes - the game's characters or classes - are also unlocked by way of manufacturing them from blueprints and materials.

Digital Extremes is unusually interactive with their playerbase and frequently make balance and aesthetic changes based on the loudest and most persistent complaints, contrary to the tendency of general MMO service providers to fall back on vague statistics or appeal to a SilentMajority. As a result the game is rapidly evolving as it grows. The developers even caught Sony's eye and was invited to bring the game onto the {{Playstation 4}} as a launch title with promises of a whole new development team for the console version.

An XboxOne version was announced for E3 2014. It was released on September 1st.

[[https://warframe.com/ Get it here - it's free to play]], and currently under open beta. The TvTropes Warframe community can be found in '''[[http://tvtropes.org/pmwiki/posts.php?discussion=13649539290A21847400 this thread]]'''. Said community includes the Troper clan.
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!!This video game provides examples of:

* AbsurdlySharpBlade: The Ether Blade. It appears to be made either out of transparent material or [[LaserBlade pure]] [[PureEnergy energy]], and it has the innate advantage of going through heavy armor like butter. The player who wields one will leave every enemy in various forms of total dismemberment after only a couple of swings. In the lore, it was made as a [[MercyKill merciful way to dispatch]] allies of the Tenno that had become [[FateWorseThanDeath infested]] by the [[TheVirus Technocyte plague.]]
** Really, all of the bladed weapons count as this, although it's justified given the fact that futuristic materials and techniques are almost certainly involved.
* AceCustom: Multiple variants: Prime (Orokin), Wraith (Grineer), Vandal (Corpus), and Dex (Lotus).
* TheAestheticsOfTechnology: All the factions have weapons or items the player can use, and they all have their own unique visual style.
** The Grineer's weapons are pseudo-organic in design, having odd bulges and protuberances in places. Their colors are often vomitous shades of yellow, orange, and green. Examples include the Gorgon LMG and the Grakata assault rifle. Their spaceships are bulging, hard, and utilitarian shapes, based off of modern-day submarines. These are side effects of the production process. Much like the Grineer themselves, they are created in industrial qualities, have any rough edges filed off, and are immediately issued to the field.
** [[OurWeaponsWillBeBoxyInTheFuture Corpus weaponry is boxy]], fitting more with their crewmen than their security bots. They're almost universally light grey in color (or if you want to spice things up, ''dark'' grey), with splashes of added cyan or green glowy bits. Examples include the Dera plasma rifle, the Supra squad support weapon, and their version of the Flux Rifle. Their ships follow the same concept.
** Tenno weapons are streamlined, built with equal parts form and function in mind. They have classic wooden stocks or handles with intricate metal or porcelain sculptures for the main body. They are colored neutral greys and blues. Examples include the Paris bow, Latron combat rifle, Furis SMG, and Tigris sawed-off shotgun. Like the Warframes themselves, some of their older equipment designs (like the Glaive or Skana) have semiorganic style elements reminiscent of the Infested. From what we've seen, their ships follow a similar trend as well.
** Infested weapons tend to look like [[BodyHorror the severed body parts or growths of Infested]], with one even being powered by biochemical reactions, and several of them specifically denoted as {{Living Weapon}}s.
*** The Acrid is a notable exception. It looks more like an attempt by the Grineer to integrate Infested tissue into their weaponry. The Acrid is a Grineer design handgun with a canister of sickly green Infested material.
** Orokin technology, evident in their Void Towers and their Corrupted defenders (and Prime-quality Warframes and weapons), is smooth and flowing, ivory white and richly decorated with gold. It bears some similarities to the Tenno weaponry and equipment, but tends to be more ostentatious with the gold plating, or covered in odd gold struts. Their facilities are CrystalSpiresAndTogas, with lots of gold and ivory decorating streamlined, white hallways and Zen-style plants and waterfalls here and there.
** What makes the Lex pistol and Burston rifle stand out is that their design does not directly fit any of the factions. They are too symmetric and boxy to be Grineer weapons, too rounded and angular to be Corpus based, too simple and mechanical to be Tenno weapons. Their manufacturer has led to some speculation by the Forum.[[note]]In the original Dark Sector pitch, Grineer Marines are seen using Burstons, and were the choice of Lancers, up until the similar Grineer Hind replaced the Burston.[[/note]]
*** However, the addition of Burston Prime (and later the Lex Prime) hints that Burston may in fact be a Tenno weapon.
* AfterTheEnd: A war happened in the background a long long time ago, one that got all the Tenno locked away into space, made the Orokin vanish, and spawned the Infested. The other combatants were apparently beings called the "Sentients".
* AffablyEvil: Ironically, Ruk fulfills this trope in the Gradivus Dilemna Event. Where Alad taunts the player over the fact that he has grand designs for their captive comrades[[labelnote:IE]]dissecting them and using their remains to build a prototype security proxy out of Tenno parts[[/labelnote]] but is arguably the lesser of two evils since helping him will not result in an enslaved Mars, Ruk will compliment the player's skills and express [[BloodKnight vicious satisfaction that they now fight together to crush the Corpus]]. When fighting against him, he appeals to their sense of honor, urging them to turn against Alad to save their comrades, and reminding them that the Corpus ''will'' turn on the Tenno when they're no longer profitable (and that they will [[GrievousHarmWithABody crush the Corpus using the Tenno's bodies]].) If the player ran more Grineer missions than Corpus, he genuinely thanks the Tenno supporting him, tells them that they fought bravely and did not have to fight as hard as they did, and, if the player ran a hundred missions for the Grineer, tells them that the Tenno have what the Grineer can't make in a cloning tube: the heart of a warrior. Aww.
** Also, throughout the event, Alad V, being a tight-fisted CorruptCorporateExecutive, is not very happy about handing out battle pay. Ruk, on the other hand, eagerly gives out rewards, telling Tenno to keep it up, there's more where that came from.
* AggressiveNegotiations:
** The encyclopedia entry for Operation Sling-Stone shows the the Corpus and Grineer pulling guns on each other while negotiating. The whole special event series also shows how violent the contract dispute has gotten - all for a mere few billion credits.
** History repeated itself during the Gradivus Dilemma event. The Corpus discovered a few Tenno in cryosleep near Mars and wanted to keep them for experiments. This, however, violated a contract with the Grineer, who demanded that the Corpus hand the Tenno over to them. Alad V, the Corpus member who found the Tenno, blew the Grineer off, confident that boosting anti-Grineer resistance on Mars would protect them against the Grineer. Needless to say, the Grineer invaded, using the violation as an excuse to crush and subjugate Mars. Unlike Sling-Stone, however, the Tenno themselves were less united in helping them out, mostly because the Grineer gave better rewards and that the Corpus had several Tenno in cyrosleep hostage.
* AirVentEscape: Inverted, the Tenno often do an air vent ''intrusion'', complete with knocking out the air vent grates noisily.
* AltumVidetur: A single-word example; ''Corpus'' can be translated from latin to mean 'corporation', amongst several other things. The symbols used in their writing (various ship signs, broadcasted messages, etc.) seems more like a mix of the standard latin and cyrillic scripts, though.
* AmbiguousGender: The playable Tenno. Any Tenno can use any Warframe despite the suits having clearly gendered physiques and being referred to with gendered pronouns in their profiles. Hypotheses range from a Tenno being able to change apparent sex and suit at will, to multiple Tenno under the player's command. [[spoiler:Vor's dialogue during the Vor's Prize quest claims each Warframe is controlled by one person - and that person may be pure energy. Granted, given that it's Vor, he may just be speaking pretentiously.]]
* {{Animeland}}: Everything about the Tenno is taken from stereotypical anime depictions of {{ninja}} and {{samurai}}: the way they sit, their swords, their motions, their name, their very design...
* AnAdventurerIsYou: The frames fit these roles relatively well, although there's a fair amount of crossover:
** ''The Tank''[[labelnote:*]]With the role of absorbing damage and protecting other party members[[/labelnote]]: [[RhinoRampage Rhino]][[labelnote:*]]''The Mitigation Tank'': Rhino can outright negate damage by giving himself a second set of "hit points" that absorbs damage for him[[/labelnote]], [[AnIcePerson Frost]][[labelnote:*]]''The Magic Tank'': Frost is known best for the ability to produce a shielded area that blocks projectiles and slows down enemies that try to enter it to engage in melee[[/labelnote]].
** ''The Healer''[[labelnote:*]]With the role of restoring health of other party members[[/labelnote]]: [[TheMedic Trinity]][[labelnote:*]]Besides group healing skills, Trinity is also a ''Regenerator/Mitigation Tank'' because of her ability to heal or transfer a portion of received damage to enemies, as well as a ''Resource Master'' with a similar ability to use enemies to regenerate energy[[/labelnote]].
** ''The DPS''[[labelnote:*]]With the role of damaging enemies[[/labelnote]]: [[JackOfAllStats Excalibur]][[labelnote:*]]With a number of straightforward attack skills, along with the ability to paralyze enemies while giving them a melee damage bonus[[/labelnote]], [[ShockAndAwe Volt]][[labelnote:*]]''The Nuker'': Volt "nukes" enemies with instantaneous massive damage via his skills[[/labelnote]], [[SmokeOut Ash]][[labelnote:*]]Ash is mainly a ''Backstabber'' with his focus on exploiting melee attacks by either teleporting close or inducing bonus melee damage around him, as well as ''The Scrapper'' with a skill that lets him attack enemies with an unblockable series of melee animations [[/labelnote]], [[TheBerserker Valkyr]][[labelnote:*]]Also a ''Scrapper'' that brawls with enemies by making them helpless while vastly improving her melee speed. Her above average health and innate armor encourages her wade in to the fight and ignore damage, making her a classic ''Meat Shield Tank''[[/labelnote]], [[BlowYouAway Zephyr]][[labelnote:*]]Besides damage skills, Zephyr also has the ability to cause projectiles to change course away from her, making her an ''Avoidance Tank''[[/labelnote]], [[MakingASplash Hydroid]][[labelnote:*]]While he mostly has straight damage skills, he can also considered a ''Summoner'', with the power to spawn tentacles in an area to attack independently of him[[/labelnote]].
** ''The Status Effect Guy''[[labelnote:*]]With the role of strengthening allies, weakening enemies and controlling the flow of battle[[/labelnote]]: [[MagnetismManipulation Mag]][[labelnote:*]]With the power to drain and restore shields, or cause enemies to attract projectiles. Also considered an ''Area of Effect'' type, because of the large effective range of her attack skills[[/labelnote]], [[TheTrickster Loki]][[labelnote:*]]Who has no directly damaging skills, but has notable abilities like creating aggro attracting decoy targets and permanently disabling enemy guns in an area around him[[/labelnote]], [[MakeMeWannaShout Banshee]][[labelnote:*]]Who has the ability to negate detectable noise, stun enemies, and create new weak points on enemies[[/labelnote]], [[PsychicPowers Nyx]][[labelnote:*]]Whose chief function is to turn enemies into temporary allies, or cause groups to turn and attack each other[[/labelnote]], [[TrapMaster Vauban]][[labelnote:*]]who can tag the environment with traps, suspend enemies in the air, or pull them into vortexes[[/labelnote]], [[MasterOfIllusion Mirage]][[labelnote:*]]Who is armed with a number of self buffs, and can also booby trap the environmental effects to direct them specifically towards enemies[[/labelnote]], [[PowerOfTheVoid Limbo]][[labelnote:*]]Who can temporarily remove himself, allies or enemies from battle, as well as increasing enemy damage taken and restoring allies' energy[[/labelnote]].
** ''The Resource Master''[[labelnote:*]]With the role of providing allies with supplies[[/labelnote]]: [[{{Necromancer}} Nekros]][[labelnote:*]]Noted for his looting ability, forcing dead enemies to drop extra resources they did not the first time[[/labelnote]].
** ''Area of Effect''[[labelnote:*]]With the role of damaging as many enemies as possible in a wide radius[[/labelnote]]: [[PlayingWithFire Ember]][[labelnote:*]]Who can entrap enemies in a circle of continuously damaging fire, or cover the area in a series of explosions[[/labelnote]], [[PoisonousPerson Saryn]][[labelnote:*]]Who can cause damage to spread from one enemy to another contagiously, or just straight up release a blast of massive damage[[/labelnote]], [[HavingABlast Nova]][[labelnote:*]]Notable for her ability to "prime" enemies around her to explode upon death, potentially resulting in a chain reaction of explosions. The slowed and vulnerable state of "primed" enemies also makes her another ''Status Effect Guy''[[/labelnote]].
** ''Jack of All Trades''[[labelnote:*]]With a versatile role to handle any number of needs[[/labelnote]]: [[HolyHandGrenade Oberon]][[labelnote:*]]Who can heal, deal damage, buff allies, and inflict or remove status effects but without as much ease or effectiveness compared to other classes[[/labelnote]].
* AnInteriorDesignerIsYou: The Clan Dojo. Certain rooms and objects perform various functions for the Clan members, while others are merely aesthetic.
* AntiArmor: Weapons with high focus on puncture damage do more damage to heavily-armoured enemies like Grineer soldiers, but suffer against shields. Meanwhile, impact damage is best for depleting shields and robots' health but is less effective against soft flesh. Conversely, slash damage focused weapons tend to do very poorly against heavily-armoured foes, but often gain significant damage multipliers versus the squishy and mostly-unarmoured common/non-ancient Infested. Weapons tend to have clear specializations from their base damage types as a result, but good elemental mods can make most weapons usable regardless of their base physical stats.
** Corrosive damage does +75% damage (so 175% total) to armor, and can ''permanently'' reduce the target's maximum armour. Brutally effective against the Grineer as a result. Magnetic damage works similarly against Shields, making it ideal for tackling the Corpus.
* AntiFrustrationFeatures:
** If you fall into a {{Bottomless Pit|s}}, you will be automatically brought back up, with no damage sustained[[labelnote:*]]although you will lose any buffs you had on your 'frame, such as Rhino's Iron Skin or Nova's Null Star[[/labelnote]].
** The drop rate for Warframe blueprints from bosses used to be appallingly inconsistent- while it was possible to get blueprints for all 3 components (helmet, chassis, systems) in 10 runs or less, there were horror stories of players running a single boss up to ''seventy times'' without getting a full set; not only was there a chance that the blueprint drop wouldn't be what you wanted, but an even greater chance that a blueprint wouldn't drop at all. This was changed so now you're ''guaranteed'' a blueprint reward for completing a boss assassination mission, rather than blueprints being {{Random Drop}}s from the bosses. It may still take a few runs to get all 3, but it ultimately takes a LOT less time to get new 'frames.
** In the stealth Mastery test, no matter your choice of melee weapon you will always OneHitKill the mooks, even if you mistime and only trigger a normal attack instead of a BackStab.
* ArmorIsUseless: Nope. All that heavy armour the Grineer wear is ''fairly'' effective against small arms fire (especially on Ceres or Sedna, where the higher levels mean Grineer turn into bullet sponges), and those huge helmets worn by Corpus Crewmen stop standard bullets cold. Not so much use against flaming swords or lightning-fists, though, or toxic bullets that give the enemy radiation poisoning on top of an infection, then freeze/electrocute/immolate them.
** Warframe Armor however is currently a very poor stat to boost: even armor-extraordinaire Valkyr struggles, and she has ''three time'' the armor of the next frame with the highest armor.
*** On the other hand, Rhino's Iron Skin is more or less a layer of ablative armor, and it lets him take a lot more punishment than he normally could. This is because it is functionally a third set of hitpoints[[labelnote:*]]400/600/800/1200, depending on level[[/labelnote]], on top of his health and shields, that soaks up damage before it reaches him.
* ArmorPiercingAttack: Following Update 11, weapons have a portion of Puncture damage (effective against Grineer and Corpus crewman helmets), and be can modded for Punch-Through properties (making bullets go through cover or enemies, letting you [[OneHitPolykill hit multiple enemies,]] or ones hiding behind cover or riot shields).
* ArtEvolution: The Corpus' [=MOA=] robots used to be sleek and organic-looking - an update changed them to be more obviously robotic and plated.
** Grineer used to speak pure English. It was later changed to a unique Grineer language which sounds like a heavily corrupted version of English. Some phrases are recognizable, others are almost indecipherable.
** The Corpus received a more intelligible language than the inhuman grunting robot noises they used to make.
** Captain Vor used to be a red colored Flame Blade, but got a serious makeover turning him into old man with serious cybernetic augmentations and an Orokin key in his chest that he uses for special attacks.
** Similar to Vor, Sargas Ruk was a generic-looking Grineer goon with generic boss ranting, but the Gradivus Dilemma turned him into a fire shooting CyberCyclops who talks in HulkSpeak.
** Alad V used to be voiced by a different actor (with a thick Canadian accent), and appeared as a generic Corpus goon. Gradivus changed him into a SissyVillain with an odd eye visor. Compare [[https://www.youtube.com/watch?v=O50zEVmoYqQ this]] to [[https://www.youtube.com/watch?v=lUFUTG_wM2A#t=0 this.]]
** Vay Hek, who was a generic Grineer grunt with a bit of an ego, has now turned into a propaganda-spewing lunatic piloting some sort of mech. As of Update 13, his cybernetic body enhancements far surpass even Sargus Ruk's. Little trace of his human origin can be seen (except his face) in his new design.
* ArtificialStupidity:
** The AI can be very stupid about spotting you, ''especially'' if you're crouching. Stealth is actually reasonably possible if you're careful and cunning. Also expect to hear (and see) the occasional death from the AI standing in the fire hazards that sometimes occur during a mission.
** Update 10 and 11 have had problems with rescued hostages suddenly refusing to follow players.
** The Red Veil hostages rescued starting in Update 13.1.0 are highly prone to SuicidalOverconfidence, trying to stand their ground against Grineer troops when even the players are desperately cutting and running.
** ArtificialBrilliance: On the other hand, AI upgrades have allowed enemies to make repeated attempts at triggering an alert if they keep getting killed, jump onto obstacles to get a better vantage point or reach a sniping Tenno and even ''use ziplines and Parkour panels''.
* AscendedMeme:
** The [[https://warframe.com/news/call-comics-contest comics contest announced on 14 March 2014]] makes reference to Cap'N Vor cereal and Greedy Milk.
** Derf Anyo, a sub-boss confirmed by DE to be added alongside the reworked Nef Anyo in a future update, originated from a fan's joke concept that had become a forum meme.
** In [[https://www.youtube.com/watch?v=4u-cNKqnGD8 this video]], a Corpus Crewman says "Salad V".
** [[https://www.youtube.com/watch?v=ZhnQD2tTqGA This video]] has Frost and Hydroid [[GotVolunteered "volunteer"]] the Corpus for the ALS Ice Bucket Challenge.
* AttackDrone: Corpus uses [[MechaMooks several flavors of robots]] (referred to as 'Proxies' in-universe) to supplement their infantry, and make up a substantial part of their military forces.
** As of Update 13, clans or alliances that have deployed solar rails to a dark sector also have drones and proxies to defend it from attack, most notably other clans wanting control of that sector.
* AttackItsWeakPoint: Most enemies have one or more spots that take more damage than the rest of their body, or a spot that is more vulnerable to damage of a given type (though it may be highly resilient to other types). Grineer Marines are well-armoured except for their faces. Zigzagged By the Corpus, who are protected by massive helmets but whose head can be revealed with a shot to said helmet. Most infested are either devoid of clear weak points or it's barely worth aiming for them, Lephantis however plays this completely straight with 3 weak points (one per head).
** The Banshee's Sonar ability actually ''creates'' temporary "weak points" by making the highlighted part take four times as much damage as it would normally for as long as the power is active. As a result, these weak points can ''stack'' with existing weak points, making it possible to inflict truly [[ForMassiveDamage massive damage]] if it highlights certain locations.
** Many overhauled bosses now follow this trope, being completely invulnerable to damage until their weakpoint(s) are exposed, usually following an attack.
* AttackPatternAlpha: Back when the Grineer spoke English, they were extremely fond of "Combat Formation Bravo," which apparently meant "stand in front of the space ninjas and shoot at them".
* AuthorityEqualsAsskicking: All of the Grineer bosses are vastly superior to the common marines in combat. Tyl Regor is a scientist, for instance, but can easily tear you apart in melee combat. Councilor Vay Hek? Well, he's armoured up and packs a [[{{BFG}} Big F'ing Shotgun]].
** FridgeBrilliance for Hek: that [=BFShotgun=] is named after him, he probably designed the thing.
* BackToBackBadasses: It's quite easy to invoke this with another Tenno, as in many of the trailers. In addition, Ruk seems to see Grineer-oriented Tenno this way during the Gradivus conflict:
-->'''Sargas Ruk:''' "Rraahudd, Tenno! Now we fight together! Now we crush the greedy milk from their skulls. The Corpus will pay for their crimes with their useless lives."
* {{BFG}}: One possible room on a Grineer Galleon has a house-sized cannon in the middle that constantly fires into space. A similar stationary artillery emplacement can be found on the Phobos Settlement tileset, and Corpus Gas Extractors have huge turrets no doubt designed to repel any Grineer raiding parties.
** The Supra is an enormous, boxy laser machine gun. Really, there's big effing guns everywhere.
** The Opticor takes the cake, being the biggest non-Archwing gun the Tenno can use. It's a massive laser cannon that charges up and shoots a large beam.
* {{BFS}}: The Gram greatsword looks like someone grabbed Soul Edge and made it use plasma edges. There's also the Galatine, a gigantic Tenno-made greatsword taller than most warframes with a more flowing, organic design. The Archwing melee weapon is a sword that's twice as tall as a Tenno; even the description acknowledges that it's too heavy to use outside of zero-g.
* TheBigGuy: Each and every (male) Grineer soldier is a hulking brute. Some of the females are also hulking, but are thinner and taller than the males. Also the Rhino and Frost Warframes' role, being the toughest but also the slowest.
** The overall largest Grineers are actually the gangly ''female'' Heavy Gunners as the male heavies (Bombards and Napalms) are significantly shorter.
* BiggerBad: Much of the game's mess can be laid at the feet of the leaders of the Grineer and the Corpus, none of whom you get to strike directly at. The best you can get are politicians-slash-officers leading efforts that are detrimental to the Tenno, and they don't stay down for long, thanks to either [[CloningBlues cloning]] or robots.
* BlackAndGreyMorality: The Grineer/Corpus/Infested are definitely the bad guys, but we never get any indication hat the Tenno are actually good guys, especially if [[spoiler:the Stalker's lore is to be believed]]. The Tenno appear to be true neutral, or lawful neutral at best because rather than wipe out one faction or the other (excepting Infested) they're much more concerned with keeping the balance between them the same, as evidenced during the invasion events where the player is forced to support one of the sides instead of just slaughtering both.
* BlackBox: Orokin artifacts. Even the Corpus - the corporations that manufacture technology based on the artifacts - do not know how most of them work, and non-Prime Tenno tech is stated to be inferior copies based on the actual thing[[labelnote:*]] sometimes. some of the newer weapons are stated to be engineered by present day Tenno, and the Vandal weapons are all guns taken from other factions and modified to fit Tenno standards[[/labelnote]].
* BlackSpeech: Corpus dialogue used to be composed of inhuman choking noises. This may be a function of their helmets as event cutscenes have an executive speaking in English with strong synthesizer effects and what little we hear of the helmetless Capture target's voice is very different.
** Grineer now speak in some sort of harsh-sounding language with very few recognizable words. There are obvious elements of european and eastern-european languages in there, along with modern english corrupted by NuSpelling, ("Target" becomes "Targat") possible FutureSlang, and thick accents ("Okay" has become "Oghi?"). However, there's a great deal of what they're actually saying where your guess is as good as mine. For example, "Got kan tero sonafa gunta", which might be "goddamn tenno son of a gun".
*** The female Grineer voice set used by their snipers and heavy gunners that were used when the Grineer spoke English were this, with near-indecipherable barks and screeches. They're comprehensible if you pay close attention, though.
** The Corrupted encountered in Orokin Void Towers also 'speak' (or at least vocalize in some fashion) an unknown, hissing 'language' that is very vaguely similar to the Stalker's vocalizations. Whether it's actually a means of communicating or just general strangled noises of surprise/anger/etc. is anyone's guess.
** The Stalker verbally communicates through what can only be described as wordless, breathy hissing.
** It is entirely possible that if the Tenno ever spoke, it would sound very similar to the Stalker [[spoiler:since they both were once members of the Orokin Empire and presumably spoke the same language.]]
* BlingOfWar, BlingBlingBang: 'Prime' equipment, and Orokin equipment in general, is ''very'' flashy - gold trim and so on. Frost Prime in particular is sporting a NiceHat.
* BlownAcrossTheRoom:
** The fate of any {{Mook}} caught on the receiving end of the Hek - the huge, quad-barrel shotgun.
** Also the fate of any mook in the crosshairs of the [[NailEm Bolto pistol, Twin Gremlins, the Paris/Dread/Cernos bows, or the Boltor rifle.]] It used to be so extreme as flinging slain enemies across massive rooms at light speeds to nail them to the wall, but now it's slightly less exaggerated.[[labelnote:*]] Of course, they still throw enemies fast enough to kill the guys standing behind them from the impact alone, but thats besides the point.[[/labelnote]]
** Banshee can do this with extreme prejudice via a properly-leveled Sonic Boom attack. Nekros can likewise do the same against a single enemy with Soul Punch, but his concussive force is ''far'' greater, capable of sending Grineer Heavies flying clear across the room, knocking over everything in their path.
* BoardingPod: Recently added to some Grineer ships in Invasion missions are boarding torpedo launchers which you use to cross from the Grineer ship to the enemy Corpus one. When defending a Corpus ship you might sometimes find a room with one of these boarding torpedoes smashed through the hull with a Grinner marine or two piling out of it.
* BodyCountCompetition: The game can easily fall into this with well equipped players, who will try to get a few kills before their team mates can because the entire team is tearing apart the enemy hordes thrown at them. Not helped by the mission results keeping a score of who killed the most enemies.
* BoomHeadshot: Played with:
** PlayedStraight by: Most Grineer troopers, who wear heavy armour everywhere ''except'' their heads. On the other hand, the sturdy looking UFO-shaped helmets on medium Grineer are apparently no more durable than flesh and bone.
** Played with by: Infested. Some of them are quite bullet resistant, others are not. The ones with heads take more damage there than on the body, but it's not ''the'' weakest point. [[BodyHorror Their heads also aren't where you'd expect them to be.]]
** {{Inverted|Trope}} and Played with by: Corpus Crewmen. Almost no body armour whatsoever, but massive helmets that ''used'' to be bulletproof. Now, you can knock them off to get a good, clean bullet to their faces.
* BoringButPractical:
** Loki fits this trope to a tee. His abilities are boring compared to the fiery doom wreaked by Ember or the flashy frost moves by Frost, but as a pure utility frame, Loki remains consistently useful against every faction, at every level, on every mission type.
** Excalibur is also very much this. He's the "standard" starting warframe [[note]]You get the choice between three but the game recommends Excalibur as a well rounded beginner option[[/note]] and does several things fairly well, but is severely outclassed by specialised frames and his abilities are all very bland, though most remain functional either for mobility or crowd control purposes.
** Rhino can very easily become this by keeping Iron Skin on at all times and using Rhino Stomp. It quickly devolves the game into pressing a single button to clear out the enemies in a given area, then moving on to repeat the process.
** Soma is one of the most powerful weapons in the game if properly modded, but it's a fairly standard hitscan automatic rifle with nothing flashy at all.
** The Karak is even more this. It's a JackOfAllStats rifle, and doesn't stand out in any way, but it's a solid weapon than can be built with resources from the early nodes, and with the right mods can last players up to the endgame.
* BossInMookClothing:
** Ambulas, the solar system's tiniest, angriest Moa. Don't be fooled by his humble and unremarkable appearance compared to the average Moa - Ambulas is the meanest little son of a bitch you'll ever meet. The only thing that sets him apart at first glance is his classy black-with-gold-trim paintjob. Then he highkicks you in the face.
** The old J3 Golem was this, looking just like a normal Infested Runner (prior to being reworked).
* BowAndSwordInAccord: Possible thanks to the ''Paris'', ''Paris Prime'', ''Cernos'' and ''Dread'' bows, and the wide selection of swords.
* BrainwashedAndCrazy: Implied to be done by the Corpus: the flavor text for Neptune indicates they indoctrinate people into being drones.
** Also the fate of any intruders that succumb to the Neural Sentry installed in the Orokin Void Towers. They are referred to as the "Corrupted", get an Orokin-themed makeover (weird golden facemask, white/gold-themed armour, energy weapons shoot golden bolts, etc.) and attack all non-Corrupted on sight.
* BrainsAndBrawn: Both on the enemy and player side.
** On the enemy side of things, we have Sprag and Ven'kra, two of the Grineer's newest, most vicious clones, who made their debut appearance during Operation Gate Crash. Sprag is a melee-focused enemy who wields a [[DropTheHammer BFH]] and stays hot on the Tenno's heels, while Ven'kra is a ranged enemy who can call in foes as support and snipes at the Tenno with her Vulkar. Sprag is considerably less intelligent than Ven'kra is.
** On the player side of things, we have Rhino and Loki. Rhino is The Big Guy, easily capable of charging his way through almost any enemies, soaking up nearly any ranged offensive, and nigh unbeatable in melee, especially with a Fragor or other heavy weapon. Loki, on the other hand, is the Squishy Wizard - he can't take much damage, but with a distraction as loud and hard to miss as Rhino, he can easily run around destroying the most dangerous ranged foes with his crit multipliers while Rhino utterly crushes everything else. It helps that he can strip every enemy to melee, making them even more hilariously trivial to kill. This can apply in match-ups between Rhino and other frames, but Loki and Rhino do it the best by far.
* BribingYourWayToVictory: You can either grind for Warframe parts and wait until the RNG is kind enough to grant upon thee Catalysts or Reactors to make your weapon twice as effective... or just pay for it. While you can't buy Prime parts, you can pay for the keys for access to Towers that contain said parts. While cash is not ''required'' for either of that, it does make it more convenient.
** Mods and keys can now be traded by players, even for Platinum (the real cash currency). While a player who is short on luck can give up and fork up some money for a mod, it also means that things like equipment slots and gear-empowering items are more available to players who sell mods.
* BrokenPedestal: Part of the reason behind Frohd Bek hunting down Alad V - though, given the Corpus culture of greed, this is mostly because Alad V A) owes a lot of money to the board, and B) Frohd will get kicked off the board as CEO if he doesn't stop Alad's project.
-->"What happened to you, Alad? I used to look up to your profits. I used to look up to your products."
* CameBackWrong: In the Codex entry for the Excalibur Warframe, it is stated that the Orokin hid refugees and survivors of the Orokin/Sentient War in the Void - and when they returned, they came back changed. The Orokin turned these changed into the Tenno, to help fight the war. The Stalker expands on this, and depending on how you read it, the plan had either GoneHorriblyRight or GoneHorriblyWrong.
* CameraScrew: Attempting to run a Stealth Mission with a bow or throwing knives is difficult if you are forced to put your back up against any solid object or a wall, because the camera is too close to your 'frame. Your head and shoulders will fill most of the viewing area, including the area around the aiming reticule, ruining your aim. Attempting to move away from the wall might cause an enemy to see you, breaking your stealth.
* CannedOrdersOverLoudspeaker:
** All ships have a PA system. They remind the workers to not misuse industrial equipment, to follow proper procedures when handling Orokin tech, to ensure doors are locked, and generally to stay safe. Occasionally, there'll be a call for various codes in various ships of the bay... presumably the four-man team of ninjas tearing that part of the ship apart.
** In early beta, ships with active PA systems would announce [[TheDevTeamThinksOfEverything the Tenno's presence over the loudspeaker]]. This feature disappeared for a while, but later on, PA announcements came in the Grineer and Corpus language, so it's hard to tell what they're saying anymore. The word 'Tenno' is clearly recognizable, however, and judging from the tone of these announcements they likely aren't invitations for tea and biscuits.
** The Grineer outpost on Phobos feature hovering drones which broadcast propaganda speeches in Grineer language. Unlike the ship [=PAs=] these boost the nearby Grineer into fighting more effective. Destroying them removes this buff.
* CanonWelding: VideoGame/DarkSector is canon, in some form or another-according to Livestream 10, Hayden Tenno was actually the first Tenno. There's also the Proto skin for Excalibur, which supposedly existed before the ''Orokin''.. Which explains a... actually, that just raises a whole lot more questions.
* ChargedAttack:
** Melee weapons used to have a charged attack, but this was removed in Melee 2.0.
** The ''Miter'' blade launcher, as well as the ''Paris'', ''Cernos'' and ''Dread'' bows deal more damage if fully drawn. The Ballistica crossbow can alternate between its regular 4-shot rapid attack and a charged bolt.
** The Lanka railgun also has a charge mechanic, and can shoot prior to max charge for less damage.
** The Drakgoon Grineer shotgun has an interesting take on this: charging the weapon reduces the spread of the pellets, making it more accurate over time.
* ChewingTheScenery: From [[https://www.youtube.com/watch?v=wOygJJ7Zudk what we've seen of him so far,]] Vay Hek must cost the Grineer a sizable portion of their annual budget in scenery repair.
* ChunkyUpdraft: The graphical representation of Rhino's ultimate power, ''Rhino Stomp'', is to fill the air with helplessly levitating enemies and scraps of deck plating. Similarly, Frost's AOE attacks involve frozen chunks of ice flying about in the air. Banshee's ''Sound Quake'' causes similar floating deck-scraps as well, as does Mag's ''Crush''.
* CleanCut: A common result of any kill from Slash damage, main sources being bladed melee weapons such as the Dual Ether, or beam weapons like the Flux Rifle. Vertical, horizontal, diagonal... there are several possibilities!
* CloningBlues: The Grineer rely on hordes of clones to kill: the problem is that they tend to degenerate. Their solution? Cybernetics, and more clones. You go after a scientist trying to fix the cloning defects.
* TheComputerShallTauntYou: All bosses begin taunting the player when missions close to their stages are unlocked. During the stages themselves the bosses will taunt the player as he or she progresses through each room.
* ColorCodedForYourConvenience, bordering on PaletteSwap:
** [=MOAs=] (Green for [[MechaMooks normal]], Orange for [[ShockwaveStomp Shockwave]], Blue for [[{{BFG}} Railgun]], White for [[FrickinLaserBeams Fusion]], purple for Anti-[=MOA=], and black-and-gold for [[BossInMookClothing Ambulas]].)
** Ospreys are either teal (shield), green (leech), yellow (minelayer), orange-ish (scavenger), orange (Oxium Osprey) or white (fusion MOA drone).
** Grineer troops are also somewhat colour-coded - common soldiers are faded light green, shotgunners are orange, melee troopers and Shield Lancers are black, Napalms are red, Heavy Gunners used to be vivid green and white before their new model, and so on.
** Most Corpus Crewmen wear standard beige/sand-coloured suits, though their Elites wear blue suits, Techs wear red suits, and Sgt. Nef Anyo has a black suit, and the Corpus Ambulas is colored black with gold trim.
** The Stalker is pitch-black, with dashes of red.
** Orokin Corrupted are white-grey, with splashes of gold. Prime equipment follows the same theme.
** Eximus units (formerly known as Leaders) have modified colour schemes befitting their elements- Arctic Eximus units have white-blue, Shock Eximus units are blue-yellow, Fire Eximus units are orange-red, and so on.
* CombatMedic: Trinity has absolutely no offensive abilities (although she can redirect damage she takes to nearby enemies [or allies, if you're feeling dickish] with her Link ability) but she's still a friggin' heavily-armed space-ninja.
** Oberon also falls into this, having both damaging abilities such as Smite, to healing oriented abilities such as Renewal. His ultimate attack also deals high damagae, and enemies killed by it have a high chance to drop health orbs.
* {{Conlang}}:
** A language of corrupted English (among others) was made for the Grineer. It has a harsh, guttural sound, like a mashup of English, Russian, German, and one or two other languages.
** It is known that there is an Orokin/Tenno alphabet, with letters or sentence written on walls of the Orokin Towers, some menus or even on the Tenno themselves. The very refined and elegant appearance of said writing can easily be mistaken for just random line patterns, but devs confirmed it was writings. However, no Tenno actually 'speak'.
** The language used by Corpus Crewmen is English, passed through a cypher that preserves the vowels and replaces most of the consonants with harder sounds, making it sound much more alien than it actually is.
* ContinuousDecompression: What happens when you break the reinforced glass in certain rooms. Oddly, even though adjacent rooms are sealed off, the decompression can apparently last indefinitely. ExplosiveDecompression is not present, but anything in a decompressing area (even robots, and space-suited Corpus mooks) will steadily take damage - first shields, then health. If health reaches zero they just fall over. Oddly, whilst there are shutters to seal breached windows, they do not close automatically.
* CripplingOverspecialization: After Damage 2.0, damage is divided into three main types - Impact, Puncture and Slash, each of which is good against certain enemy types. A number of weapons are very strong in one type but utterly dismal in the others, such as the Slash-focused Galatine. Before the Damage 2.0 review, it was very problematic, but most weapons can now be used against any faction admitting they have the proper element modded into it.
** Some Warframes only shine because of one of their abilities, and are scarcely used otherwise. Recent changes made some frames more balanced, but many still consider some frames useless. YMMV on the usefulness of individual Warframe.
* CriticalHitClass: The Soma does poor base damage - but its chance for a critical hit is much higher than all of the other rapid-fire guns, comes with a slot made for the mod that increases critical hit chances, and its magazine size and fire rate ensures nearly every shot is a critical. There are now also other weapons which rely primarily on critical builds in the fashion of the Soma, such as the Vectis Tenno sniper rifle. The Grakata Grineer SMG is another notable example.
* CutAndPasteEnvironments: Is heavy on this. Partly justified that some mission maps are set in faction-designed ships or stations. Aesthetics would be carried over. But seeing similar environments over and over again on ''different planet'' might be too much. Digital Extreme is trying to remedies this over time.
* CutenessProximity: Ordis is initially very repulsed by the presence of a hatchling Kubrow on your ship, but as it incubates his remarks degenerate into cooing over the furball and the noises it begins to make.
* CyberCyclops: General Sargas Ruk's helmet has only a single glowing eye, as do the Grineer Seeker and Trooper helmets, and Mag Prime, to a certain degree.
* CycleOfHurting: Swarms of Infested Ancients and Grineer Shield Lancers are infamous for this, as they have attacks which can knock players over and leave them helpless. Ancients can smack any warframe hard enough to knock them over, and Ancients tend to come in huge swarms in Survival missions. Shield Lancers generally only come in pairs, but are more annoying to deal with unless the player has a weapon with punch-through mods. Amusingly, the players can do the same to the enemy - the Jat Kittag and several other heavy weapons have "momentum" which prevents the player from being knocked over, and most heavy weapons stun the enemy.
* DeadlyDisc: The ''Miter'' sawblade-launcher first seen in the hands of Grineer Eviscerators, and available to the Tenno as-of Update 9.5. Exactly what it sounds like-- it launches a spinning sawblade. [[PinballProjectile A very bouncy one.]]
* DeathRay: Several varieties.
** The Orokin Tower maps field the deadliest variety that can cut any Warframe down to size in ''seconds'' of direct exposure. In the Defense missions, the Tenno can use these to their advantage, triggering the laser beams to cut down the Corrupted. Or their allies, if they're not careful.
** The Flux Rifle seems to be a handheld version of the above that is only marginally less deadly. Corpus Elite Crewmen wield these.
** The Spectra is a pocket Flux Rifle with appropriately downscaled firepower. Roughly as powerful as the Flux Rifle was before they increased its damage output.
** The Fusion MOA uses something akin to a Flux Rifle except bigger and nastier, capable of stripping shields and Iron Skin in seconds. Worse, it can also make the victim a ManOnFire, inflicting an additional incendiary damage-over-time effect.
* DeflectorShields: Possessed by the Tenno and several tougher enemies, along with most Corpus. The Corpus Shield Osprey projects a fairly strong defensive shield around ''other'' Corpus units (drastically improving their survivability). Most of the various Bosses have exceptionally powerful shields as well, either sheer durability, rapid recharge (the most common), or [[PuzzleBoss Jackal]]'s CognizantLimbs-based shield.
** Rather notably, shields ignore the enemy's normal damage resistances or weaknesses, though they do take fifty percent more damage from cold element, and seventy-five percent more damage from magnetic element.
* DegradedBoss: Grineer Flameblades were once near carbon copies of Captain Vor (the first boss you'll encounter) without the boss level HP and damage, being pretty much identical in terms of battle strategy.
* DepletedPhlebotinumShells: Weapon modifications sit somewhere between this and AbnormalAmmo. Before Update 11 it was entirely possible to have an assault rifle that fires armour-piercing, incendiary, freezing or electrical bullets. Or a pistol that fires two rounds with each pull of the trigger. You can also combine them freely. Yes, even incendiary, freezing bullets.\\
Since Update 11, the elemental builds have been reworked. Where previously you could fire incendiary freezing bullets that electrocuted, mounting Fire and Ice damage mods will now create a combined element (in this case, Blast). [[https://forums.warframe.com/index.php?/topic/134176-explained-damage-20-builds-with-cheatsheets/ It's explained here]].
* DestructibleProjectiles: The Grineer Bombard's missiles can be shot down mid-flight, though this may prove a little challenging if they're not flying straight at you. Likewise, the Ogris' projectiles can be shot down by enemy fire; think twice before launching one at a Heavy Gunner or you may find yourself in need of a revive.
* DidYouActuallyBelieve: [[https://www.youtube.com/watch?v=wOygJJ7Zudk Vay Hek]] invokes this trope, in between [[ChewingTheScenery taking enormous bites out of the scenery.]]
* DidntNeedThoseAnyway: Infested can suffer more than just CriticalExistenceFailure; it's not uncommon to see their head and part of the upper torso blown away by a nonfatal headshot, with no ill effect (beyond taking a lot of damage) as far as the AI is concerned. Shooting them in the legs is moderately more effective, as it forces them to crawl around instead. In theory you can shoot their arms off, but it's not easy and doesn't do much to stop them from attacking you.
** Loki's Radial Disarm Uber is useless against bipedal Infested for this reason. Sure it blows their limbs off but they'll continue to pursue and attack with phantom limbs that deal the same damage.
* DiegeticInterface: As of Update 7, several interaction prompts and popups appear as part of the world rather than just being on the screen.
** With Update 14, all game menus are presented as holographic displays produced by either the Tenno or the Liset's components.
* DifficultButAwesome:
** The Lex pistol doesn't look like much on first use. Tiny magazine, high recoil, low rate of fire, long reload time, and, unmodded, can't one-shot the weakest Grineer goons in the starting system. So why is it widely advocated? It's really powerful and has great accuracy even at great distance with the right mods. The key is to treat it like a PoorMansSubstitute sniper and pick your shots methodically, not a spray-and-pray close-quarters automatic. It also makes a good backup/complement to highly inaccurate or short-ranged weapons such as the [[KillItWithFire Ignis]] and the various shotguns.
** The sliding melee can be difficult to land consistently, but it deals damage more efficiently than hacking randomly.
** Learning to use a bow requires learning to charge the shot rather than try to lay out shots as fast as possible, as well as taking into account the ballistic arc and flight time, but the damage from a fully-charged headshot can be very impressive.
** The Ogris requires a massive investment of time and resources to obtain, not to mention membership in an advanced clan, and even after you finally get it you still need to learn how to manage the charge time, but it is EXTREMELY worth it... and then you properly mod it; when that glorious day comes, your Ogris will fire what are basically miniature nukes and destroy entire waves of enemies in one fell swoop.
** The Penta grenade launcher takes a little getting used to, given its projectiles do not fly very far and bounce around. Like the Ogris, however, it is extremely deadly when properly modified and in the right hands. It requires some care to use effectively against Corpus.
** The Supra has a long reload time (even with reload speed mods) and has a very slow projectile travel time. It does, however, three times the damage of the Gorgon.
* DoppelgangerAttack: As of Update 13, participating in a solar rail dispute between clans or alliances can have you fighting against Tenno Spectres, which are doppelgangers of the clan/alliance members you are fighting against. These doppelgangers carry the same types of loadouts and builds of the actual player, ranging from laughably easy to defeat beginner players to extremely difficult Trinitys using Link.
** Mirage, the warframe added in Update 14, can split into several copies of herself.
* DoubleUnlock: To craft some weapons or Warframes, you need a certain Mastery Level, which requires you to level up other weapons or Warframes first. And for some of those, you first need to craft components before you can craft the item proper.
** The new katanas take this to absurd levels, at least for those unwilling or unable to purchase or obtain (through trading) the platinum required. First, you need to build a dojo and lab so you can research the Nikana, which has to be researched ''after'' the Akstiletto, and requires at least 100 oxium and a rare 'argon crystal' from the Void. Then you need to actually need to build it - after obtaining 3 more crystals and 75 more oxium. Once that's done, you can use it to build the Dragon Nikana - but wait! That needs Mastery Rank 8 to use! Nevermind another 75 oxium and another argon crystal.
* DroneDeployer: Corpus Techs, beefier Crewmen who can toss Shield Ospreys out to protect them. Grineer Seekers can launch Latchers, smaller versions of the extraordinarily annoying rolling balls of blades that stagger Tenno - these ones "just" latch on and explode, though they also used to have an extremely irritating variant called Nervos that paralyzed you in co-op. Corpus Leech Ospreys can launch, er, leech drones; these attach to a Tenno and drain their shields until they melee or dodge to shake them off. The worst would have to be Fusion [=MOAs=], who deploy an ''actual'' Drone when they approach low health, effectively doubling their damage output.
* DualWielding: Longsword and dagger, dual daggers, dual axes, meat cleavers, take your pick. Dual-wielded melee weapons tend to be very fast hitting, and most of them can hit multiple enemies per attack.
* DumbMuscle: Grineer clones, victims of CloneDegeneration.
* [[ElementalPowers Elemental Weapons]]: In the classic [[FireIceLightning fire, ice, and electrical]] flavours, plus Toxin as a fourth element. All of them have a special effect;
** Heat does high damage to fleshy humanoids and Infested, especially the weaker ones, with a chance to cause enemies to burst into flames and take damage-over-time. It is less effective against shields.
** Cold has a chance to significantly slow enemies down (both movement-wise and in terms of attack speed) and does additional damage to basic shields, certain types of armour, and soft Infested tissue, but is ineffective against hardened Infested flesh. [[LiterallyShatteredLives Additionally, enemies killed by Cold damage may shatter into pieces]].
** Electric damage stuns enemies, particularly Corpus robots, with a chance to chain damage to additional targets. It deals more damage to mechanical targets, and less damage to alloy armour.
** Toxin damage is more harmful to humanoids with a chance to deal damage-over-time straight to the target's health, but is less effective versus robots and Infested.
** In addition, elemental mods can be used in tandem to [[AllYourPowersCombined create new elemental attacks]].
* EarthThatWas: Whilst not as grim as previously thought, it is clear that Earth was abandoned at some point during the past and has been reclaimed by nature; the Orokin engineered 'super weeds' to keep it out of the hands of any who might claim it. Vay Hek tried to reclaim Earth through the use of the Cicero toxin, in order to stop Earth's jungle from growing endlessly. His attempt, however, was thwarted by the Tenno.
* EldritchLocation / GeniusLoci: [[{{Precursors}} Orokin]] Towers, hidden away in dimensional folds and only accessible by a one-use key. Each Tower is filled with traps and still defended by some form of ArtificialIntelligence called a Neural Sentry. It seems that anyone who dies in a Tower is upgraded with Orokin tech and brainwashed to serve the Tower's Neural Sentry. The Towers have a white-gold color scheme, and are full of weird features like root-like growths sprouting from the walls, and waterfalls that flow upwards. They also contain many secrets and valuable treasures from the Orokin era, waiting to be rediscovered.
* EliteArmy: The Tenno, whose emphasis is on small numbers of highly elite soldiers, waging a war by acting as special forces to make precision strikes.
* EliteMooks:
** Grineer Heavies, which come in [[KillItWithFire Napalm]], [[StuffBlowingUp Bombard]], and [[MoreDakka Heavy Gunner]] flavours. They look like upscaled, recolored versions of standard Grineer Soldiers and/or Ballistae, but are tougher and have more powerful attacks, as well as an annoying [[AreaofEffect ground pound attack]]. Grineer Commanders are another type, just as tough, lightly armed, but have an annoying enemy ability to swap places with a player. And seeing as they tend to use it while in the middle of a lot of Grineer Mooks, well.
*** In a slightly more literal example, there are now Elite Lancers; these tougher troopers have personal DeflectorShields and use the Hind burst-fire rifle in place of the Grakata. Their accuracy and power was underestimated at first, and they had to be nerfed fairly hard.
** Corpus [=MOAs=] have bigger, tougher variants - the area knockdown [[ShockwaveStomp Shockwave MOA]], the ranged stagger/wall-penetrating Railgun MOA, and the newly introduced short ranged, face-melting, drone-deploying Fusion MOA. There are also Elite Crewmen now, packing [[FrickinLaserBeams Flux Rifles]], who [[GlassCannon make up for their lack of armor with long-range flux rifles that do the same damage as Fusion MOA.]]
** EliteZombie: Finally, the Infestation also has the Ancients (Ancient Healer, Ancient Disruptor, Toxic Ancient) which are bigger and tougher infested foes. The Healer [[ExactlyWhatItSaysOnTheTin heals nearby Infested]], the Disruptor can eradicate your shields and energy with a single hit, and the Toxic Ancient's gas cloud ignores your shields.
*** ''Lephantis'' and ''Phorid'' would also qualify, being the Infested Bosses for the Orokin Derelict and Eris regions respectively. Lephantis is a towering mass of amalgamated bodies which fused to create a three headed monstrosity, with 2 heads with toxin-based ranged attacks and the last head sporting a gigantic scythe. Phorid is a powered-up Charger that can fire homing quills from his back, and [[MakeMeWannaShout emit a radial sound-blast to stagger his enemies]].
*** Some Ancients are sometimes presented as "bosses" in alert missions, despite being completely normal units. J-3 Golem, a former boss, was the same way prior to his removal, but in a permanent boss position.
** Update 12 added Eximus enemies, which are stronger versions of regular enemies that also have additional special abilities, including but not limited to ManaDrain and a knockoff of Frost's Snow Globe.
* TheEmpire: The Grineer, who conquered Earth a long time ago and have spread their empire out to the rest of the solar system.
* EnemyCivilWar:
** The Grineer are clearly bickering amongst themselves, fighting for leadership and control of various holdings and resources. Powerful warlords like Vay Hek and Sargas Ruk pursue their own interests in the guise of helping the Empire. KlingonPromotion and YouKillItYouBoughtIt seem frequent, with the rank and file not even contesting hostile takeovers in some cases.
** Several builds ago, the Grineer would raid Corpus ships, or vice versa. It was a rare occurrence, but still a possibility. The infested can join the fun, as well. This feature seems to have been disabled, and/or eventually upgraded into the full-on Invasions system.
** The Hunt for Alad V has Corpus board member Frohd Bek offering to give Alad's location up to the Tenno if they help him deal with the Infested, out of fear that Alad would take the chairmanship if his Zanuka Project succeeds.
* EnemyMine:
** One weekend event, Operation Sling-Stone, has shown the Corpus (grudgingly) reward the Tenno for taking out a fleet of Grineer ships meant for a special operation against the Corpus. The prize were some ammo conversion mods.
** The very next weekend saw Operation Arid Fear, where the Corpus were now hiding the locations of Grineer settlements from the Tenno [[OnlyInItForTheMoney because the Grineer were paying them a small fortune]].
** The fact that the basic rifle for the Tenno is Corpus in design is handwaved by the Corpus willing to work with anyone for the right amount of cash.
** The Gradivus Dilemma was this again, albeit adding in SadisticChoice and WeAreStrugglingTogether. The Corpus and Grineer are warring again at the eponymous place and the Tenno are called to make a choice - side with the Corpus to prevent the Grineer from gaining ground, but letting them get their hands on some Tenno in cryosleep? Or side with the Grineer to save those slumbering Tenno, but letting the Grineer grow in strength? The Lotus has refused to prescribe which side a Tenno should choose, with the result that Tenno are competing with each other.
** The Hunt For Alad V has Corpus board member Frohd Bek sending some MOA and Shield Ospreys to help the Tenno clear the Infested ships in Jupiter.
** The Tenno are stated to be enforcing the 'balance' between the Grineer and Corpus now, and can side with either faction during invasions as they see fit. As before, Battle Pay is awarded for assisting them.
** And it doesn't matter how much the various sides hate each other: once the [[TheDreaded Infected]] show up on the scene, everyone cuts the squabbling and works together.
* EnergyWeapons: Introduced in Update 9, the [[RayGun Flux Rifle and Spectra]] gun designs based on Corpus weaponry. They fire pinpoint-accurate lasers and deal extreme damage to anything the beam is focused on, but consume ammunition at appropriately high speeds.
* EscortMission: Rescue objectives sound like they could be hellish... [[AvertedTrope fortunately, they're not]]. The Hostage you have to rescue is armed with a very basic pistol when they are first found, and [[ArtificialBrilliance always tries to take cover]] [[ArtificialStupidity when he isn't running between multiple players trying to figure out who to follow]], and [[MadeOfIron has strong shields and lots of health, despite being essentially naked]].
** However, the hostage can be armed - a player can hand the hostage their secondary weapon. Their [[DiskOneNuke Level-capped, Orokin-Catalyst Upgraded, Fully-modded murderous secondary weapon,]] that can be anything from a magnum pistol to dual fully-automatic nail-guns, to a beam-spewing flux pistol, which the player would be fully capable of beating a level using exclusively from start to finish.
* EvenEvilHasStandards: The Gustrag Three are psychopathic to the point of slaughtering fellow Marines, simply because their ship was taking too long to get to the action. When Sargas learns about this, he is disgusted that Vay Hek, who ordered their rehabilitation, would find use for traitors, and that he'll regret it when they stab him in the back.
* EveryManHasHisPrice: Invoked by Alad V during the Gradivus Dilemma; he offers to double whatever Sargas Ruk is giving the Tenno to fight for him if you sided with the Grineer. Perhaps unfortunately, you can't actually take this offer.
* EvilGloating: Alad V invokes this ''if you sided with him'' during the Gradivus Dilemma, telling you not to worry about your friends in Cryosleep, because he [[EvilPlan has grand plans for them.]] This, [[TooDumbToLive to the Tenno who are trying to stop him and his buddies from being steamrolled by the much stronger Grineer.]]
* EvilIsNotAToy: The Once Awakened quest shows that originally, the Technocyte plague was originally [[SealedEvilInACan not a problem]]... until a certain Grineer, [[MorallyAmbiguousDoctorate Dr. Tengus]], decided to see if it would make a good weapon. One inevitable containment breach later and the Infested threaten the entire Origin System. And then he has the temerity to [[NeverMyFault blame the Tenno for the breach]] and tries to take credit for the (not entirely successful) containment of the initial outbreak.
* EvilMakesYouUgly: The Grineer are all clone troopers and their genetic stagnation really shows in their faces. Most of the Grineer bosses have been cybernetically modified and augmented to the point where very little of their original flesh is left and only their decaying faces remain as a key to the human origins they disgrace.
* ExactlyWhatIAimedAt: In "The Profit" trailer, Zanuka dodges Banshee's thrown Glaive... which goes on to hit the control apparatus Alad V is wearing.
* ExcusePlot: The game began with one; you are part of a clan of space ninjas, fighting to push fascist space assholes and their army of degenerate clones out of the known galaxy, and crush some corrupt corporate goons, ''and'' deal with a '[[TheVirus technocyte plague]]' that's overrunning countless ships, stations, and colonies. Recent updates, however, have provided tantalizing glimpses of a highly intriguing story surrounding the Orokin and the origins of the Tenno themselves..
* ExplodingBarrels: Bright red-and-orange barrels with little red lights - they are plentiful on most levels. The Orokin have them disguised as ceramic storage containers - look for the red slits and smoke coming out the top.
* EyelessFace: The Tenno do not have eyes, or at least not ones visible on the warframes themselves (exception of Vauban's alternate helmet). This is {{lampshaded}} by Alad V, who tells Tenno fighting for him that they finally see eye-to-eye in the fight against the Grineer, and immediately [[SammysGlassEye corrects himself on that.]]
** The Lotus eyes are also covered by her helmet. The Corpus in turn have called her an "eyeless slag", which seems to hint that they see that as the Tenno's main feature.
** Actually, since even many of the rescue targets you're sent after wear face-obscuring masks and goggles, once could say that hiding the eyes is [[SpaceClothes the fashion of the future]].
* FacelessGoons: Many (but not all) of the Grineer soldiers wear faceplates. The plates don't seem to reduce how much damage the troopers take from headshots though. The glowing eyes just make them easier to headshot in the dark, in fact. Then there's the Corpus personnel, who all wear giant bulletproof box helmets.
** For their enemies, the Tenno must appear to be this.
* TheFaceless: The Tenno never remove their helmets. What they actually look like, [[AmbiguouslyHuman or actually ARE,]] is anyone's guess.
* FashionableAsymmetry: Event badges and several Warframes have always had this effect. As of Update 13, players can mix-and-match armor on either shoulder or leg of their Warframe, as well as wings on their Sentinel.
* FateWorseThanDeath: Anyone who dies (and isn't a Tenno) in an Orokin lair are indoctrinated and warped into becoming eternal guardians.
* FireBreathingWeapon: Grineer Scorches (and the players, with some Clan research) use the Ignis, a handheld flamethrower which does catastrophic damage to unarmored targets, can hit multiple enemies at once, ''penetrates walls'', and can be modded to shoot hot-pink radiation blasts that freeze the target, or electrified explosions, or corrosive fire, or...
* FirstPersonSnapshooter: Update 11 added a "Codex Scanner" that can be used on enemies for xp as well as information on their vital statistics such as health, armour, shields, any vulnerabilities or resistances to certain damage types, locations where that enemy can be found, and items dropped.
* FlashStep: Grineer Flame-Blades and other high-tier melee Grineer, as well as the bosses that resemble them, offset their melee only weaponry by the ability to teleport right next to you. Usually behind you.
* FlunkyBoss: Not intentionally, perhaps, but bosses often have a decent sized group of {{mook}}s on hand to help out, and provide ammo/energy drops for the players. The only boss that ''doesn't'' really have mooks[[note]]excluding pesky Mine Ospreys, which do not drop ammo or energy[[/note]] has regular energy/ammo drops into his arena from overhead rails.
* FoeTossingCharge: The first ability of the Rhino warframe, which knocks down any foes that aren't literally vaporized. Hydroid's ''Tidal Surge'' power likewise sends the user rushing forward, scattering foes in their wake.
* TheFourthWallWillNotProtectYou: During the Tethra's Doom event, Councilor Vay Hek interrupted the developers' livestream mid-sentence.
* FragileSpeedster: The Loki 'frame has the lowest starting shields and health of all the warframes (75 each) but is also the fastest of the lot, faster even than Ash and Nova.
* FrickinLaserBeams: At range the Corpus use energy-bolt or energy-beam weapons almost exclusively, with the exception of plasma grenades and the Jackal's arsenal; machine guns, grenades, and missiles. The ''Supra'' Repeater is apparently a 'heavy laser gun' with green projectiles, whilst the ''Dera'' Rifle uses bolts of cyan plasma, to give just two examples.
** Darvo, a Corpus you have to rescue from the Grineer during the opening missions, lampshades this.
--> '''Darvo:''' "Legions of robots, mindless automatons, freaking lasers!"
** The Flux Rifle and Spectra pistol fire continuous orange laser beams.
* FriendlyFireproof: Infested are immune to the toxic auras of Toxic Ancients... unless you have a Nyx handy to mind-control said Ancient.
* FromBadToWorse: Missions can easily wind up like this. A simple mission to destroy a ship's reactor to cripple it? Okay. But now you've done that, the Infested have come aboard - and to make matters worse, you now have to rescue someone from the ship's brig! Now [[MeleeATrois you have to battle your way through the Grineer and Infested, who are fighting each other for control of the ship]] to reach the extraction point, whilst praying things don't manage to somehow get ''even worse''.
** From the Corpus's viewpoint, the Gradivus Dilemma could be seen this way. First, they have a dispute with the Grineer over trade routes, but then the discovery of a large cache of slumbering Tenno incites a full-out war between the two factions - [[UpToEleven and then the Tenno get involved..]]
* GatlingGood:
** The Grineer Gorgon LMG is a minigun in all but appearance - it uses a motor driven feed system, which forces it to have a wind-up time to get to full firing speed, but it hits like a train and has an impressive rate of fire. The Corpus equivalent, the Supra, also has a wind-up time, but it has multiple barrels - they do not rotate, however.
** The newer Corpus ''Cestra'' sidearm is a pocket energy repeater with a rotating multi-emitter/barrel assembly - presumably to aid in heat dispersal and rate of fire, as with actual gatling weapons. Oddly enough, the barrels are part of the magazine.
* GeneticEngineering: The Grineer Empire's hordes, all turned into overly muscled brutes. Their female soldiers take the route of cybernetic enhancements, like the Corpus.
* GeoEffects: Missions can sometimes start with the location having had cryogenic malfunctions or battle damage/munition storage accidents. The former halves your maximum shields for the duration of the mission, whilst the latter creates patches of burning material everywhere that inflict lots of damage if you're daft enough to stand in them. For temporary ''Geo Effects'', some rooms can also be depressurized by shooting out the windows; this seals off the room and causes ContinuousDecompression, which steadily depletes the shields and health of all players and enemies trapped in that room.
** ''Prime'' Warframes also have some kind of interaction with parts of the Void Towers, such as causing certain objects to emit a once-off wave of energy to restore power to the Prime and his allies.
** Orokin Tower missions feature numerous booby traps, including pressure-activated lasers and shockwave generators, proximity-sensitive collapsible covers, and fog traps that will slow down both Tenno and Corrupted foes alike. Orokin Derelict missions feature dilapidated versions of all of these, as well as stagnant water supplies with electrical currents running through them, which can quickly eat through a player's health and shields much like the fire patches in standard missions.
* GlowingEyesOfDoom: Helmeted Grineer Troopers have orange-reddish eyes, whilst some of the Infested have orange-red or blue eyes. Corpus bosses also have glowing lines where eyes would be on the helmets.
** Interestingly, Volt is the only Warframe that can be accused of this, as his energy color can alter lights located where his eyes ''should'' be.
* GettingCrapPastTheRadar: Ordis is implied to be saying (or wanting to say) the same kinds of things that Red Text always wants to say. Which is not clean.
* GlassCannon: Grineer Sawmen do a LOT of damage up close, but die from one sword slash, pistol shot, or poke. Less damaging are the Corpus Prod Crewmen, who lack the damage, but have a chance to stunlock.
** Corpus in general. The lack of body armor means they'll be taken out much more easily than Grineer goons, but arm themselves with somewhat better weaponry and field shielded {{Mecha Mook}}s that are tougher and more dangerous.
** Fusion [=MOAs=] can do extreme damage in a matter of seconds, stripping someone's shields (regardless of mods) in moments -- but aren't noticeably more durable than regular MOA. On the other hand, they can also deploy a fairly durable Drone armed with a rapid-fire plasma weapon.
** On the player end of things, [[PlayingWithFire Ember]] and (especially) [[StuffBlowingUp Nova]] can dish out some pretty brutal damage, but have lackluster defense and, in Nova's case, below-average [[DeflectorShields shields]] as well.
* GodSaveUsFromTheQueen: The Grineer have not one, but ''two''.
* GodzillaThreshold: The Orokin Empire waking up the Tenno to fight the Sentients. It was considered a desperate move. How desperate, you ask? They tried using the ''Technocyte plague'' first, a serious threat to the universe at large, due to how virulent and transmissible it is, because it was more prudent. Codex entries hint at the Tenno being warped and unstable from their time in the void - a Orokin agent was severely disfigured by a candidate that would later become a Ember tenno in a ''giant fire that swept through the ship''.
* GoodIsNotNice: The Red Veil, {{Well Intentioned Extremist}}s that see corruption in everything and wish to purge it - at any cost.
** The Steel Meridian leader is openly dismissive of the Tenno - ''even when you join up with the faction''.
* GratuitousJapanese: Tenno is the word for "Emperor". It could also be translated as "From Heaven", both of which apply well to your cadre of space ninjas.
* GrayAndGrayMorality: As with VideoGame/{{Destiny}}, the Syndicates require you give in to one extreme.
** The Steel Meridian vs. The Perrin Sequence: Either side with Grineer traitors who believe in force and violence to protect the weak, but believe in war and all its terrible costs, or side with Corpus traitors who push for peace and pacifism, but are still just as greedy.
** The Arbiters of Hexis vs. The Red Veil: Side with Tenno who wish to become a proper civilization and not just a breed of warriors for a long-dead race, but may uphold and possibly be responsible for the [[spoiler:genocide of the said long-dead race]], or side with Tenno who believe in wiping the Grineer and Corpus off the map, but are insanely dogmatic and absolutist, to the point where [[IDidWhatIHadToDo murdering ''anyone'', even civilians, is fair game.]]
** Cephalon Suda vs. New Loka: Side with a unfeeling, possibly crazy A.I. who wishes to study everything in the universe (and "study" includes "maim, kill, and disassemble anything she considers worthless"), or side with [[GranolaGirl a bunch of hippies]] who wish to revert to untainted humanity and recolonize Earth.
* GreatOffscreenWar: The war that the Tenno fought in before being put into stasis, as well as the war that caused the [[AbusivePrecursors Orokin]] to unleash the [[ZombieApocalypse Infested.]]
** WordOfGod says that there are non-Tenno, non-Grineer/Corpus factions who are fighting against the latter - it's been alluded to in flavor text, such as Alad V. talking about supporting the Mars resistance.
** The Rescue 2.0 update has the first onscreen appearance of the groups: The Red Veil resistance group.
* GroundPunch: Grineer Heavies can do this to damage and knockback nearby attackers, based off the ''Radial Blast'' power that Rhino used to have.
* TheGuardsMustBeCrazy: Both smart and stupid to varying degrees. They won't leave patrol paths to check out noises, but other times they can be deaf and blind. Usually if you engage them and aren't quick about it, one of them will run to the nearest Command Console to raise the alarm -- unless you can kill them before they get there.
* GunsAkimbo: You can do this with various kinds of semi-automatic and full-auto pistols.
* HandCannon: Among the pistols you can get: a gun made to fire shotgun rounds, about as big as your head. There's also a slightly more conventional handcannon, the Lex, that does very high damage, in exchange for holding only six rounds. The Kraken, a high-damage two-shot burst pistol, also qualifies.
* HeelFaceTurn: Steel Meridian and The Perrin Sequence syndicates are lead by Grineer deserters and Corpus merchants, respectively, that oppose the warmongering nature of the two empires. However, the two syndicates [[WeAreStrugglingTogether still hate each others' guts]]. See WeAreStrugglingTogether.
* HelloInsertNameHere: While boss banter is rendered in SpeakingSimlish, the text-only translations will include insulting the player and his clan by name. They'll also mention the Warframe you're using.
* HerdHittingAttack: Melee attacks with dual wielded or heavy two-handed weapons (including the Bo) can hit multiple enemies per strike.
* HighlyVisibleNinja: The Tenno are futuristic ninjas, but there's nothing stopping you from painting your warframe bright pink and carrying around a heavy machine gun, a pair of {{Hand Cannon}}s, and a giant hammer.
** It gets utterly ridicoulous when you realize the ''[[StuffBlowingUp Rocket Launcher]]'' is a ''silent weapon'' meaning it's very much possible to do ''enitre stealth runs'' by exploding everything with your rocket launcher.
** Of course, if you don't leave any witnesses you might as well be invisible.
** Some Warframes like [[TheBigGuy Rhino]] or [[StuffBlowingUp Nova]] are nigh-impossible to consider stealthy by any means.
* HitScan: Standard implementation. Nearly everything that shoot bullets is HitScan, most things that do not aren't. Though ''most'' of those FrickinLaserBeams are not painfully slow (unless they're shot by Corpus goons). There are also some pretty much instant-travel beam weapons and other oddities out there.
* HoistByHisOwnPetard / BeatThemAtTheirOwnGame: The Codex entry for Excalibur released in Update 11 states that the Orokin were losing their war against the Sentients due to the latter turning their weapons and technology against them.
** Amusingly, this can be done against [[spoiler: The Stalker]] as of Update 11; he isn't immune to the [[spoiler: insane headshot damage of his own bow any more than you are.]]
** The Grineer Scorpion have been an annoyance to players since their introduction because of their hard to avoid harpoon that pulls players to their feet for several seconds. The Valkyr Warframe has a very similar ability with Rip Line allowing players to give them a taste of their own medicine.
* HomingProjectile: The Grineer Buzlok assault rifle can fire bullets that home in on targets marked by a player.
* ImpaledWithExtremePrejudice: The Bolto pistol [[ExactlyWhatItSaysOnTheTin fires bolts]] that, upon a kill, nail the victim against whatever was behind them. The final skill of the Excalibur frame, ''Radial Javelin'', has a similar effect. As of Update 6, the Bolto now comes in dual (Akbolto) and rifle (Boltor) formats as well. Update 7 brings the ''Paris'', a high-tech bow that can also pin enemies to surfaces, while later updates brought the ''Dread'', ''Cernos'' and ''Paris Prime'' which do much the same.
** One of the longsword animations for a counterattack after a successful parry has your warframe stab your target through the chest with an upward thrust powerful enough to leave them suspended on your sword for a moment.
* IaijutsuPractitioner: The recently released Blind Justice stance for the [[KatanasAreJustBetter Nikana and Dragon Nikana]] turns a Warframe carrying either weapon into this.
* ImprobableWeaponUser: Grineer Flameblades and Corpus Prod Crewmen wield electrified clubs, and Grineer Butchers wield rusty cleavers; Grineer Scorpions wield Machetes. This, in spite of all the rocket launchers and assault rifles and laser guns and wahey lying about the place. They can still be surprisingly dangerous if they close to range, however.
* ImprovisedWeapon: A lot of weapons in Warframe are supposed to be this:
** The Twin Gremlins are actually nailguns used bolting decks and armor plates to Grineer ships. Naturally, it also bolts Grineer to the decks and bulkheads with bone-shattering, armor-piercing force. Apparently, they're dual-wielded to make up for their lack of fire rate.
** The Serro saws are used to tear apart derelicts and decommissioned ships for Corpus scrap. Rebels in their scrapyards also found it useful for tearing apart their Corpus slave drivers.
** The Spectra pistol was a laser used for deep space construction.
** The Quanta - and its Infested counterpart the Mutalist Quanta - were originally mining tools used to cut through rock.
* [[InfinityPlusOneSword Infinity+1 One Bow]]: [[spoiler: The Stalker]]'s bow has become this as of update 11, with the decapacitation mechanic finally kicking in. It is now capable of dishing out critical hits of over 7,000 damage without mods upon fully charged headshots.
* IncomingHam: [[http://www.youtube.com/watch?v=wOygJJ7Zudk "Tenno! Tenno, Tenno, Tennooohhh..."]]
** Any time a system boss taunts you through messages.
* InterfaceScrew: The Ancient Disruptor's main attack used to subject you to ''severe'' interface screw (colour scrambling/inversion everywhere) and instantly drains all of your shields and energy. Somewhat reduced in 5.3/5.4 since it was a bit ''too'' disorientating/dangerous for those with epilepsy or similar conditions - now it mostly just scrambles the appearance of your HUD and disables part of it, rather than applying any trippy colour shifting. The Shockwave [=MOAs=] or anyone who can create shockwaves will create an orange, slowly expanding bubble that will shake your screen and generally suck.
* AnInteriorDesignerIsYou: Two Words: Clan Dojo.
* {{Invisibility}}: One of the Loki frame's primary powers turns it invisible for several seconds. Attacking does not break this invisibility. Ash can SmokeOut and turn invisible for a few seconds, without attacks making him visible.
** InvisibilityFlicker: If using Shade on the other hand, attacking enemies with your weapons does cause invisibility to break. Very annoying when you're trying to BackStab and sneak. For some reason, your abilities don't break cloak.
* JetPack: The Archwing is an upcoming feature that gives Tenno the ability to fly and fight in space.
* TheJuggernaut: The Rhino. Like Frost it's very slow and can in fact show up to most fights too late to even help if it's paired with faster frames, but it's abilities can make it more or less untouchable. It's fully possible for well equipped Rhinos to walk up to ''bosses'' and causally beat them to death [[NighInvulnerability without ever taking damage.]]
** Surprisingly enough Valkyr is now the only frame in the game with outright invincibility.
* KatanasAreJustBetter: The basic sword a Tenno gets is a faintly organic-styled katana-esque blade. It's rather effective -- though not the best sword by a long shot. All longswords and shortswords are wielded with the characteristic downward slashing motions.
** Update 13 added the Nikana, a hard hitting katana, and its upgrade the ''Dragon'' Nikana, which has the [[UpToEleven highest base damage in the game.]]
** Averted with the Dakra Prime, a sabre style weapon which has the potential to hit even harder than the Dragon Nikana.
* KickThemWhileTheyAreDown: Enemies will gladly knock you down and wail on you while you're struggling to get back up. But you can return the favour with a melee attack that's specially animated for stabbing downed enemies... or you can just shoot them in the face.
* KineticWeaponsAreJustBetter: The ancient Orokin who created the Tenno and their weaponry (and who are technologically far beyond the Grineer and the Corpus) never bothered to develop infantry energy weapons, opting instead for guns that fire actual bullets. Their ''traps'', however, sport laser and plasma based weapons that rival or exceed the power of anything the Tenno currently field - especially in Tier III.
** The Dojo in Update 8 allows you to research Corpus weapons so that you can build and use them yourself, as well as Flamethrowers that the Grineer use.
** The Grineer firmly believe this; with the exception of the Ignis flamethrower and the Nukor radiation pistol, all Grineer weapons fire physical projectiles. They also compare very favorably with Corpus weapons; some of the best weapons ingame are Grineer weapons (such as the Grinlok, Marelok, Ignis, and Buzlok, and the [[RevolversAreJustBetter Brakk]]).
* JackOfAllStats: The Karak assault rifle, aka the "Space AK," particularly when compared to the rest of the Grineer weapons.
* {{Knockback}}: Present in all its forms. Most notable causes would be the Bo, Furax Gauntlets, and Fragor Hammer however, because [[PunchedAcrossTheRoom any enemy killed by them will be sent flying]]. Rhino Stomp has the added effect of slowing time, so your teammates can use them as target practice, or you can leisurely smash them into pieces.
* LargeAndInCharge: The bigger the enemy, the more dangerous they are. The bosses of each region are therefore the largest of the lot. Tyl Regor is taller than the Rhino and probably clocks in around eight or nine feet tall!
** Rhino, among the Tenno. He is the largest frame, and second only to Saryn in physical stature. His abilities also fit the trope, allowing him to manipulate the battlefield for his team's benefit or outright boost his allies' damage.
** The Grineer Empire as a whole definitely qualifies. As can be seen during any engagement between them and the Corpus, such as the Gradivus Dilemma, they utterly dominate the battlefield due to their superior heavy armor and willingness to use more effective weaponry than Pew-Pew style Lasers, a willingness the Corpus aggressively refuse to share.
* LaserBlade: The Gram and Plasma Sword use a pair of plasma blades mounted on either side of the weapon, allowing them to cleanly slice-and-dice enemies.
* LargeHam: [[https://www.youtube.com/watch?v=wOygJJ7Zudk Councilor Vay Hek.]] As a propagandist for the Grineer, he is quite glad to take large bites out of the scenery and healthily chew on it. While not quite as hammy, his comrade Sargas Ruk is all too happy to boast in big grunts that he will crush those who oppose the Grineer.
* LaserHallway: More like laser threshold/door. Prevalent in Corpus ships. You have to either destroy a security camera, or wait for it to blink out. They strip your shields and do some damage to you if you touch them, and can only be passed with a couple of special abilities, lag spikes, or glitching the direction you're thrown in. It is possible to dash-slide through them given correct positioning and timing, but it is not entirely clear whether this is an intended feature or not.
** ForceFieldDoor
** More conventional Laser Hallways are in with Update 8 and the Void Tower missions. One optional timed segment sees you sprinting past a number of moving and stationary lasers, and requires a fair amount of parkour and/or high-mobility powers (Slash Dash, etc.) to complete within the time limit.
* {{Leitmotif}}: As of Update 14.5, all three main enemy factions have their own dynamic battle music, each faction have their proper sound.
** A mixture of an Orchestra and Industrial sounds is used to represent the Grineer. Perfect for a kit-bashed race of decaying clones.
** Purely electronic Industrial Music with a peculiar cold and hollow sound represents the Corpus.
** Dissonant Orchestral music is used for the Infested, accentuating their "otherness".
** The Tenno are represented by subtle, balanced tones and low, indistinct hymns, and by rapid naga drums and other traditional Japanese instruments in combat. Their Leitmotif is [[BattleOfTheBands also frequently interwoven into the other faction's soundtracks to represent the Tenno fighting against said faction.]]
* LeParkour: Many such feats are simple for a Warframe. Wall-running and jumping, climbing, [[UnnecessaryCombatRoll rolling]], Vanquish-like sliding, and huge goddamn flips. They are required to access some of the treasure vaults found in the Void, and hidden locker rooms in Grineer asteroids.
* LightningBruiser: Almost every warframe is something of a lightning bruiser, apart from one or two that are either [[MightyGlacier too slow]] (Frost) or [[FragileSpeedster too squishy]] (Loki, Nova) to really qualify properly.
** Special points to Ash, who is marketed as the offensive stealth class, with powerful offensive abilities as well as invisibility. Not as well known is that he has the highest health in the game, good shields, and good armor rating, making him second in tankiness only to the dedicated tanks and Saryn. He is also the second fastest frame behind fragile speedster Loki, and has a spammable teleport. Put it all together and you have the very model of a lightning bruiser.
** Rhino, one of the aforementioned tanks, also gets extra points. By default he's tied with the other tank Frost for slowest and tankiest in the game. What puts him over the top is his Iron Skin ability, which gives him a hefty layer of hit points while his shields recharge, lets him shrug off all crowd control, and can be chained continuously, provided he has the energy. While he is usually slow, he can spam a charge ability to quickly move around the map, bowling over any enemies in his path at the same time. His prime version is no slower than an average frame, and with his speed boosting Vanguard Helmet Rhino Prime is tied for fastest frame in the game.
** For a literal ''lightning'' bruiser, look no further than Volt. Like Ash and Saryn having the most health, Volt has the strongest shields (alongside Mag, Rhino, and Frost). He has average health and run/sprint speed, but can put on a burst of SuperSpeed using one ability, and his others are all about ShockAndAwe.
** Valkyr has a faster than average sprint speed, 50% more stamina than normal frames, more than 3x as much armor as the next highest frame, can swing around like Spider Man, and is now the only frame in the game with true invincibility.
** With a fast sprint speed and flight capability Zephyr is every bit as mobile as you'd expect a wind frame to be. Curiously enough she also has the joint highest health and shields in the game (no other frame has both).
* LivingWeapon: Several weapons from Bio Research Labs are Infested in origin, giving them a very organic look and feel. Embolist in particular is explicitly marked as one.
* LostTechnology: The Warframes and other Orokin constructs are significantly more advanced than even Corpus technology (which is derived from it anyway). In-game, Prime weapons and Warframes are stronger versions of those whose blueprints the Tenno can readily access and are largely made of recovered components instead of raw materials.
* LosingYourHead: An unfortunate Excalibur-clad Tenno loses his head at the start of the new teaser trailer for Alad V and the Jupiter tileset.
* LuckBasedMission: Finding mods and the resources you need to build the equipment you want are both hard enough, but extra-special note goes to Vauban, whose components' blueprints are only available through random alerts. Better hope that the last part you need shows up when you can run the mission, because otherwise you'll have to wait around for the next time it appears, which will probably be in a couple months. Hydroid counts to a lesser extent because of the layers of RNG you'll need to deal with to get him: first you need to get the right beacons in the right quantities to go fight Vay Hek in the first place, and then you'll have to hope he drops the right blueprint. There's a reason these two are the only Warframes the fans consistently recommend [[BribingYourWayToVictory buying with Platinum]].
* LuckilyMyShieldWillProtectMe[=/=]ShieldBash: Grineer Shield Lancers carry a bulletproof shield (see ShieldBearingMook below) which they like to smash into your face; a nice high-{{Knockback}} attack.
* LudicrousGibs: On top of already-existing gore effects (such as total gibbing from Rhino Charge), Update 7.9 brought new 'damage deformers' for enemies, which basically meant a significant increase the amount of gore. Expect to see many {{Clean Cut}}s if you're using a powerful bladed weapon, and most firearms can ''easily'' blow off limbs, pulverize heads, or take chunks out of torsos.
* MachineWorship: Sargas Ruk has been using profits from hunting pre-War artifacts (by annexing everyone else's dig sites) to outfit himself with the latest and greatest cybernetic body modifications. There's also the Corpus, who have a bit of this going on. One of Sargas' taunts says it all;
-->'''Sargas Ruk:''' ''"Flesh is the flaw!"''
** However, the Corpus take the cake for this trope. They literally worship machines - namely, Orokin machines.
* MacrossMissileMassacre: The Odonata Archwing allows Tenno to perform this in space.
* MadeOfPlasticine: Most mooks can be sliced and diced by edged weapons or have chunks blown out of them with firearms. The Flux Rifle especially tends to cause a lot of gibbing and mangling of bodies.
* ManaBurn: Ancient Disruptors. Get hit once, ''all'' your energy is gone - whether you had only 1, or 300, and will negate any enemy you pick up while it scrambles your HUD. Note that [[DemonicSpiders your energy does not regenerate on its own.]]
** One of the upgrade Hyena modules will do this repeatedly - and as it's a boss fight, kiss goodbye to any replenishing energy spheres.
** The reworked Vay Hek now also has a laser that he will use to deplete your energy in the first phase of his bossfight
* MeatMoss: Ships infected with the Technocyte Plague have these disgusting slug/algae-like things covering the floors and walls. You can also see slightly more plant or web-like growths when on Infested-based Missions that use the Corpus Outpost and Grineer Asteroid Base sets.
* MechaMooks: The Corpus deploy [=MOAs=] and Osprey robots to back up their squishy crewmen, with both kinds coming in multiple flavours. Their foot soldiers are partially robotized, as well.
* MechanicalMonster: The Corpus' ''Jackal'' warbot, quadruped beast armed with heavy shields, dual machineguns, vertically launched missiles, sticky grenades, and a ShockwaveStomp attack. They later refined it into the ''Hyena'' and ''Zanuka'' - whilst these lack some of the raw firepower of the Jackal (which is more suited to engaging the Grineer) they are much faster and more agile, better suited to fighting with the Tenno.
* MechanicallyUnusualClass: Vauban, [[TheEngineer the engineer warframe]], relies on grenade-based and deployable abilities rather than his own Void-granted abilities. The difference is highlighted by Vauban's appearance - while the other warframes are generally sleek and form-fitting, Vauban wears a hulking huge helmet with a neck guard, and is "wearing" what appears to be a trenchoat and a high-tech jumpsuit.
* MeditationPowerup: The special ability of Nyx, the psychic warframe. On activation, Nyx hovers in the air in the Lotus position, and absorbs all attacks, then returns them in the form of a highly damaging explosion. The more damage she takes, the more she unleashes -- a brutally effective power against enemies that like to engage close up.
* MegaCorp: The Corpus, a corporation that controls every major trade route and flow of goods in the solar system. They won't let anything or anyone get in their way - Tenno or Grineer be damned - in the name of securing every last piece of precious Orokin-era technology. They're, according to in-universe information, deliberately patterning themselves on old merchant guilds from long ago in Earth's history, most of which were ludicrously powerful. All of their (brainwashed) employees talk in a disturbing, inhuman choke-screech and are partially robotized, which takes 'soulless corporation' to a new extreme.
* MeleeATrois: As of 5.3, one faction can begin spawning in any other faction's missions. For instance, a mission that starts out against the Grineer may take a turn for the grim when Infested suddenly begin to spread throughout the ship, prompting the Grineer to begin fighting the Infested as well as you. Or you might mow down a ship's Grineer Marine contingent and start running into Corpus Crewmen, [=MOAs=], and Ospreys.
** The Grineer, Corpus, and Infested will also attack the mysterious Stalker, who is more than happy to return fire. You can take advantage of this to wear the Stalker down before facing them yourself.
** With the release of the Phobos starchart, Grineer Settlements are also occupied by manta-like [[SandWorm Desert Skates]] that will attack both the occupying Grineer and invading Tenno.
** The Gradivus Dilemma takes this to the logical extreme with a ''full-out war'' between the Tenno, the Corpus, and the Grineer over the large cache of sleeping Tenno.
** Taken UpToEleven with Update 13.2's "Specters of Liberty" event: With the introduction of the allied Red Veil faction, Rescue missions will always consist of at least three factions. However, Corpus maps (even those invaded by Grineer) also have consoles that will spawn [=MOAs=] to fight for the Tenno, while the extra holding cells of a Rescue map also have a chance to hold an Infested enemy in captivity. Therefore, in one map, it is entirely possible to see up to '''''5 different factions''''' fighting at once - and that's ''before'' Stalker shows up...
* MightyGlacier: The Rhino. It has the second (after Valkyr as of update 11) heaviest base armor of any warframe (reducing all damage to its health by 38%), very high shield and comes complete with charging and ground stomping attacks, but it's also painfully slow, sprinting just over half as fast as any other warframe. A team with a Rhino player in it can count on him chugging along far behind everyone else, often arriving long after everything has been killed off by the faster teammates. However, sometimes everyone else is dead and a good Rhino can easily solo a mission.
** Similarly ([[AnIcePerson and somewhat literally]]), Frost, who has the same speed disability, but has the same amount of armor, and utilizes AOE storms and beams of ice to damage enemies. He's more geared toward status effects, however, with his basic power being a damaging flash-freeze that works to slow down enemies (until they're damaged).
** However equipping a fully leveled sprint mod and the Vanguard alternate helmet (25% more sprint speed in enchange for 5% power strength) turns him into a LightningBruiser that can keep up with a Loki.
* MirrorMatch: The Stalker, a mysterious high level enemy which may hunt you down in retaliation for taking down a boss. Like the player, he uses a primary, a secondary, and a melee - currently a SinisterScythe, throwing knives, and a strange bow with arrows that can decapitate a target. If you're lucky, he may drop the blueprints for you.
** With the implementation of clan battles over Dark Sectors, you may find yourself fighting a Tenno Spectre of a player who has the exact same or a similar build as you.
* MookHorrorShow: One moment, you're an ordinary Grineer grunt, going about your boring daily life. The next, out of nowhere, you're fighting for your life against a group of highly-armed, highly-mobile, utterly implacable killers. They [[IAintGotTimeToBleed never bleed,]] [[TheDeterminator never retreat,]] [[ImplacableMan and never stop.]] They [[TheVoiceless don't even vocalize when you blast them point-blank with a shotgun.]] Blow them up with a rocket launcher? [[OhCrap You just made them focus on you instead.]] Hose them down with an LMG? [[NoSell You're just]] [[ShootingSuperman wasting your ammo.]] Summon your buddies to help you fight them? [[EnemyRisingBehind They're all dead by the time you're reaching for that panic button on the console,]] [[ThisIsGonnaSuck and you can already hear footsteps behind you.]] It doesn't matter how many of your allies came to help you, either, because [[QualityVsQuantity even the best you have isn't going to be enough for this.]] To top it all off, [[ParanoiaFuel this scenario can happen to you, anywhere, any time]] - even your leaders are not safe. It sucks to be a Mook in the Warframe universe.
* MoreDakka: This is basically the Grineer's [[PlanetOfHats hat]] when it comes to combat. Their assault rifle (the Grakata) trades stopping power for a high rate of fire and good capacity, their sidearms - the Kraken and Viper - are a double-shot handcannon and a rapid-fire machine pistol respectively, and they make the Gorgon and Hek (see below).
** One of the primary weapons is the Gorgon, an enormous machinegun that trades the usually graceful Tenno ways of killing for ''more bullets.''
** There's also the Furis, if you want more dakka in your sidearm slot - and you can get two (the Afuris), for double the pleasure. Or you can slot Fire Rate and Ammo Capacity mods into your guns.
** And now you can get a dual version of the Viper pistol which has an ''even faster'' rate of fire than the Furis, but trades away accuracy. The Twin Vipers have ''the'' highest possible DPS of all the handguns currently in the game. Taken UpToEleven with the Twin Vipers Wraith, which have even more dakka.
** In an odd variant, the Hek is a quad-barrelled shotgun that unleashes a vast amount of pellets with every trigger-pull.
** The Corpus recently got the Tech, who wields the ''Supra'' Energy Repeater. Essentially an 'energy bolt' version of the Gorgon, the ''Supra'' can be developed by clans in the Energy Research Lab. A close look at the model shows that it apparently has ''three'' barrels.
** The Tenno have their own machine gun, the Soma, that has a hundred-bullet magazine, an extreme firing rate, and a high critical chance, at the cost of doing only 10 damage.
** The Boar and Sobek are ''automatic'' shotguns.
** The newly introduced Cestra and Dual Cestras are pocket laser [=LMGs=] in pistol size. The dual version features one of the highest fire rate with a huge magazine.
* MsExposition: The Lotus. She'll explain why she activated you, and she also provides information on your target during Assassination missions.
* MundaneUtility: The cryotic you're collecting during the Cryotic Front event is being used to [[spoiler: refrigerate a particular species of Martian jellyfish which is a delicacy but also spoils easily.]] Yep, you just killed a few thousand Grineer and Corpus to [[spoiler: stave off substandard refrigeration]].
* MysteriousStranger - EnigmaticMinion: The Stalker, who seems to be a 'rogue' Tenno that comes after you to 'avenge' the various bosses you've killed. It's really not clear which side they're on at this point, as the Grineer and Corpus will readily open fire upon the Stalker as well. The Infested, being Infested, will attack him too. [[PlayingBothSides No reason not to take advantage of that...]]
* {{Mythology}}: There are lots of references to various flavours of classic mythology. The Grineer have a habit of naming their weapons for various mythological beasts. For instance;
** CelticMythology: One of the Warframes is named Banshee, and she (unsurprisingly) [[LoudOfWar uses sonic-based attacks and powers]]. During the Operation Sling-Stone event, the Grineer ''Fomorian''-class ships also bore names of namesake creatures from Irish myth, such as Balor, Ethniu, Buarainech, etc.
** EgyptianMythology: The ''Sobek'' auto-shotgun is named after the crocodile-headed god of the Nile. Valkyr's alternate helmet is called ''Bastet'', after the cat goddess of, depending on the region and age of Egypt, lotion, the sun, and ''war''.
** GreekMythology: A Warframe is named after Nyx, the goddess of the night. Fittingly, her default color scheme is dark greys and blacks with a splash of dull green. The Grineer ''Gorgon'' is a [[MoreDakka heavy machinegun]]. The Tenno ''Orthos'', a double-ended polearm, is likely named for [[{{Hellhound}} Cerberus']] two-headed brother, Orthrus.
** NorseMythology: One of the Warframes is called "Loki". Loki's abilities are mostly based around stealth, misdirection, and trickery, as opposed to directly harming enemies. There is also the ''Gram'', a {{BFS}} named after the sword Sigurd used to slay Fafnir. Valkyr is named after the Valkyries, the psychopomps who take dead warriors to Valhalla, their afterlife of eternal combat. The Grineer also invoke Norse Mythology with the ''Kraken'' heavy pistol.
** UsefulNotes/PersianMythology: The Grineer-themed alternate skin for the Scindo is named the ''Manticore''.
* MythologyGag: One of the updates included a Glaive - not a BladeOnAStick, but a flying triple-bladed thrown weapon, the same sort (but not the exact one) used in VideoGame/DarkSector. Others from that game include a stealthy boss called the Stalker and "Jackal" {{Spider Tank}}s. Hostages also use the Tekna pistol.
* NailEm: The Bolto series, which include a rifle and pistol, fire stakes that pin enemies to walls. The Twin Gremlins are rivet guns made to bolt ships together, used by the Grineer... and the Tenno, who find that they work just as well as weapons to nail schmucks to the floor with.
* {{Nerf}}: The 5.3 - "Blazing Embers" patch ''massively'' reduced the effectiveness of shield capacity warframe modifications by converting them from percentages of your current shields to percentages of your ''base''[[note]]for instance, say your base shields are 100, and your current shields are 300. A mod that once increased your shields by 50% of ''current'' now only increases them by 50% of ''base''. So instead of having 450 shields (300 current +150/50% current), you now have 350 shields (300 current +50/50% base).[[/note]], with the aim of making combat much more dangerous, and making shield regeneration and damage reduction warframe modifications more appealing. When you had 1,000+ shields, there wasn't really anything that could actually threaten you short of getting cornered and stunlocked by a mob of Infested Ancients.
* NeverBringAKnifeToAGunFight: Initially {{Subverted}}, since several of the warframes used by the Tenno are heavily armored with strong shields and eventually enormous hitpoints, so that closing the gap and bisecting foes with an AbsurdlySharpBlade can often be a far more viable tactic than a standoff shooting match. But then it's back into full effect later on, where enemies can easily tear you apart if you're overconfident.
** There are also two throwing knife weapons named Kunai and Despair. They're more effective than enemy machine guns, laser beams, or rocket launchers. A later update adds the Castanas, throwing knives that can be remotely activated to electrocute enemies.
** Update 13 allows players to solely use melee as a means of combat. Parrying allows Tenno to deflect incoming bullets long enough to close larger distances, and combos allow the skilled to stun enemies up close. The implementation of a damage multiplier that could potentially triple your melee damage should you get enough hits in a short enough time. If that wasn't enough, Channeling into your melee weapon allows you to convert energy into even more melee power that, in most cases, literally vaporizes enemies.
* NewGamePlus: Once you max a frame or weapon to level 30, you can use a 'Forma' (a piece of Orokin technology) to Polarize it. Polarizing lets you alter the polarity of any slot, which means that mods with a matching polarity cost less mod energy to install, but resets the item back to Unranked so you have to level it up again. You can Polarize an item several times if you wish (the only restrictions being the Forma required each time), to fully customize and optimize your equipment to suit your playstyle and preferences.
* NiceHat: Grineer Commanders have a pretty fancy ''pope hat''-esque thing going on. There's also Frost with his odd iceberg cap, and all Prime warframes have an Orokin doodad hanging off their head.
** Headgear is also one of the primary means of differentiating general Grineer soldiers from each other - shotgun-wielding Troopers and flamethrower-toting Scorches have wide and fairly flat caps with one 'eye', Commanders have the pope hat, normal Lancers have facemasks (or no mask), Napalms and Bombards always have facemasks, desert Lancers have hoods, etc.
* NinjaPirateZombieRobot: Cyborg Space Ninjas.
* NoArcInArchery: [[{{Averted}} Yes. Yes there is.]] When making long-range shots with the ''Cernos'', ''Paris'' or ''Paris Prime'' bows, you'll have to adjust for arrow drop that can turn a headshot into a gut-shot. ''Dread'' is notable for flying much straighter than ''Paris'', at the cost of not being armor-piercing. Kunai and its variants (Despair, Hikou) also have a drop, though it's less noticeable than the arrows, exception of the Despair. The Torid also has this issue.
* NoOSHACompliance: Grineer ships have what appear to be exposed energy cores and engine function and walkways lacking railings all over the place.
** Corpus facilities in Jupiter make it possible to fall off into Jupiter's atmosphere, walk into big beams of energy, fall off of long bridges into chasms, etc.
** Orokin facilities came off rather tame in comparison to other factions'. But the location of secret rooms will make you wonder ''what'' put them there.
* NoPointsForNeutrality: In the Gradivus Dilemma event and Invasion missions, you have to pick a side to support more. If you try to support both Corpus and Grineer equally, the points will cancel each other out and you'll get no reward at all.
* NoSell: The Stalker is immune to most Warframe abilities, except for direct damage-dealing abilities. The Rhino Stomp, for example, will hurt him but won't stun him and throw him airborne like regular mooks.
* NoticeThis: Corpus storage containers shine, Grineer storage containers have two glowing lights and modules give off blue sparks.
* NotSoDifferent: Alad V says this almost outright when you help the Corpus during the Gradivus Dilemma;
-->'''Alad V:''' ''"You and I aren't so different, Tenno. We both know these dogs need to be put down. I sense we are at the beginning of a beautiful new partnership."''
** Similarly, Ruk states that the Grineer are the Tenno's best ally in the conflict; a reason he may give for doing so:
-->'''Sargas Ruk:''' "Tenno, of course you side with us! Of course the Grineer are your best option! We share your joy in Corpus death!"
* OneManArmy: A lone Tenno will leave dozens upon dozens of enemies strewn in his or her wake during an average mission. A four-man cell will have hundreds of dead people bisected as they continue to rip apart the rest of the ship..
* OffScreenTeleportation:
** Most humanoid bosses teleport, but they do it much more often if the camera is facing away from them (usually if you're running away), and usually from behind or to the sides.
** The game usually spawns mooks only in places you aren't currently in, but it gets to this level when there's no other way they could have reached the room they appear in.
* OneHitPolykill: Punch-Through mods allow your bullets to pass through terrain to strike foes in cover, and also allow your shots to strike multiple enemies... so if they're lined up just right, it's entirely possible to score multiple headshot kills with a single projectile. The Paris bow and Throwing Knives can do this with no mods necessary, even.
* OneStatToRuleThemAll: Before Update 11 brought Damage 2.0's revamps, Armor Piercing was the damage type you had to boost if you wanted to be relevant against higher-level enemies.
* OnlyInItForTheMoney: The Corpus will always work to protect their bottom line, to the point of working with the Tenno against the Grineer one week then working with the Grineer against the Tenno the next week despite hating both factions vehemently. The Tenno themselves invoked this during the Gradivus Dilemma, where factional warfare was often decided by who paid out better in the end.
** Sargas Ruk taunts the Tenno who come to kill him as 'just another Corpus drone' fighting for nothing more than money.
** Invasion outcomes are almost universally decided by which faction is offering more in battle pay.
* PersonalSpaceInvader: Leeches launched by Leech Ospreys will drain your health until you knock them off by swinging your melee weapon. Latchers launched by Grineer Seekers can only be taken off by rolling.
* PinkMist: Blasting Grineer melee troopers in the head can pulverize said head and thus leave little but a stump of a neck behind. Also (as mentioned above), headshots that don't kill one of the common Infested have a chance to blow out a nice big chunk of their upper torso along with taking off their head!
* PiratesVersusNinjas[=/=][[NinjaPirateZombieRobot Ninja Pirate Cthulhu Robot]]: Settled with the Hydroid warframe, who is stated to be a combination of pirate and ninja, and a nice dose of Eldritch tentacles, as well.
* PlayingBothSides: The Tenno in the Gradivus Dilemma event. The Tenno that fought with the Grineer did so to rescue their comrades. The ones that fought with the Corpus did so to weaken the Grineer, and when the event was over the Lotus tells you that a retrieval team was already heading to rescue the captured Tenno anyway.
* PlayingWithFire: The Ember warframe, who can use various fire powers to incinerate lightly-armoured foes. Her powers are devastating when used against the Infested due to their fire vulnerability.
* PoisonousPerson: Saryn, who, as her name suggests, revolves around area-denial by way of using [[PoisonIsCorrosive extremely corrosive poison]].
* PowerCreep: Weapons are infamous for this, particularly before Damage 2.0. For example, compare the older Vulkar sniper rifle to the newer Vectis - the Vectis is significantly more powerful, ammo efficient, and crit-seeking. Damage 2.0 brought some sense back the balance, with the introduction of more stats to modify other than "it does more damage/ammo/rate of fire" that lead to Damage 1.0's power creep. However, Prime versions of older weapons take this to the next level.
* PowerNullifier: The Stalker has an ability that lets him remove any Warframe buffs, such as Rhino's Iron Skin, stunning the player in the process. One of the upgraded Hyena models has the same ability.
* {{Precursors}}: The Orokin, apparently. They once had a whole civilization before the GreatOffscreenWar in the background of the story, but now they're gone, and only relics remain, plus the tower that the Tenno use as base. [[spoiler:If the codex for the Stalker indicates anything, the reason they're gone is because the Tenno killed them all.]]
* ProtectionMission: Defense missions, which see you defending a cryopod (or Orokin Reactor, or other various objectives) containing a Warframe against waves of enemies. Fortunately, the pod/reactor regenerate their shields and health fairly quickly if you can keep the enemies off it, making the missions reasonably easy.
* PsychicPowers: The Nyx Warframe uses these to make enemies fight for you, launch a volley of telekinetically-guided force-bolts, and cause all nearby enemies to attack each other at random. The Phorid also has similar bolts.
* ThePurge: The Red Veil seeks this outcome for the entire solar system. [[spoiler:If the Stalker is to believed, the Tenno rose up against the Orokin and exterminated all of them after the end of the war.]]
* PunchedAcrossTheRoom: Actually justified with the Obex, which are essentially gravity-displacement knuckles that hit like a truck.
* PunnyName: Saryn, which is a homophone for "Sarin", a potent nerve toxin. See also; Snipetron SniperRifle.
** The Supra[[note]]Latin for 'Above' as well as sounding like 'Super'[[/note]] has the highest raw DPS in the game.
* PuzzleBoss: The ''Jackal'' has a super-shield on its torso that effectively nullifies all incoming damage, and thus its health can only be depleted if you [[spoiler:reduce one of its legs to zero health; this causes it to fall over and disables the super-shield, rendering its torso vulnerable for a few seconds]].
* QuantityVsQuality: A handful of Tenno, specially trained and superiority in weapons, versus hordes of degenerating clones and brainwashed {{mooks}}.
* RagdollPhysics: Enemies launched skywards by Vauban's Bounce pads will ragdoll helplessly until they land, giving you time to shoot them out of the air -- this is on top of enemies ragdolling on death, which can lead to situations described under BlownAcrossTheRoom above and RailingKill below.
* RailingKill: Get yourself a Bo, find a big group of Grineer, and fight them in one of those rooms that takes place on a big catwalk. Go on, it'll be fun.
* RandomlyGeneratedLevels: Every level is procedurally generated using 'pieces' that are put together, much like ''VideoGame/{{Diablo}}'', ''VideoGame/HellgateLondon'', or ''VideoGame/{{Torchlight}}''.
* RapidFireFisticuffs / NoHoldsBarredBeatdown: The animation for attacking a knocked-down enemy with fist weapons like the Furax has your Warframe pounce on them and punch them as many times as possible, which usually results in them exploding.
* RareRandomDrop: The Blaze mod and the Sunlight & Moonlight Jadeleaf stands out for many. Additionally, anything you seek will typically be much rarer than it should be. Prime components, corrupted mods, Warframe or weapon parts comes to mind.
** The illusive nemesis' (Stalker, Harvester and the Grustrag Three) all have special drops. They are also quite hard to encounter, and while you are guaranteed a drop, you might not get what you need.
** The Kubrow Egg, which is required as part of the ''Howl of the Kubrow'' main quest. The average rate appears to require destroying 50-200 Kubrow Dens, although you could instead bribe your way past the quest by purcashing an egg for a modest 10 platinum.
* RedEyesTakeWarning: The visor of Sgt. Nef Anyo's helmet is vivid red, although it can be a little hard to see. All other Corpus Crewmen have blue visors.
* RegeneratingShieldStaticHealth: Without a Rejuvenate Artifact or Regenerate Health mods for your Warframe, Health can only be recovered by picking up red Health Orbs, using a Health Restore (that has to be equipped prior to the mission), or by being healed by an ally. Shields, however, regenerate by themselves.
* TheRemnant: The Tenno, the only living legacy left of the Orokin's reign - or so it seems. [[spoiler:The Stalker's codex hints that he's part of another Orokin warrior caste - one that defended the Orokin, instead of attacking for them. The reason he wages war on the Tenno is because the Tenno murdered the Orokin.]]
* RequiredSecondaryPowers: Elemental-themed Warframes aren't immune to their own elements eg. an Ember can take fire damage from environments or Grineer weapons, a Frost can have his shields reduced or be slowed by cold, and a Volt can be harmed by shock prods or the electrified water in derelicts.
* ReturnToShooter: An ability available to the Mag Warframe and a certain boss, which causes bullets from the victim's firearms to strike them instead. It doesn't interfere with melee attacks or abilities, though.
** The Reflection module effect is a minor variant of this.
* RevolversAreJustBetter: the Vasto revolver is easily one of the best sidearms in the game, being much faster than the Lex, and doing more damage than the default pistol.
* RocketPoweredWeapon: The Jat Kittag has a pair of jet engines mounted behind the hammer head, allowing it to attack almost as fast as a regular weapon while simultaneously stunlocking the enemy. With the Crushing Ruin stance, the rockets can be engaged to launch the player forward while [[SpinAttack spinning the hammer]] to murderize anything in the way. Ground-slam attacks will send enemies flying across the room.
* RuleOfCool: Update 6 added wall-running and ziplines.
* SadisticChoice: The Gradivus Dilemma was trying to create this for the players. Either support the Corpus, sacrificing a number of sleeping Tenno they managed to get their hands on, but prevent the Grineer from growing stronger. Or support the Grineer to free said Tenno but allow them to grow stronger creating an imbalance of power in the solar system. Players were less than happy when they didn't get a third option.
** To make the choice all the more problematic in hindsight. A new trailer shows Corpus leader Alad V. cutting an Excalibur Warframe with Tenno inside in 6 parts to sell them individualy, hinting on the fate that would have been possible for the sleeping Tenno.
* ScarfOfAsskicking: The Syandanas, scarf-like customization options for your warframes.
* SecondHourSuperpower: You don't get to equip your first ability until you gain a level. The game's a standard TPS before then.
** Unless you have an Aura mod which when fully leveled can get you up to 18 mod point boost at level 1, allowing you to equip some of the abilities from the start.
** And now as of Update 11, first abilities are now free, and do not have a cost to equip.
* SequelNumberSnarl: Update 11.5, which included jungle tilesets on Earth and the Oberon Warframe, was not preceded by an Update 11.4. Justified, as they spent over a month hyping its release and wanted to finish it before taking a holiday break.
** A worse offender is Update 14.5, which followed Update 14.2.4 after approximately 2 weeks of hyping.
* SetAMookToKillAMook: Nyx' ''Mind Control'' and ''Chaos'' powers allow her to turn enemies into temporary allies, or cause all enemies to attack each other at random. Mind Controlling the Heavy Gunner or Bombard at the back of a Grineer squad can be ''very'' effective - or you can use it to make Infested turn around and kill their own medics!
** The combined elemental 'Radiation' does the same effect, but only on enemies closest to the target.
* ShieldBearingMook: Grineer Shield Lancers. Whilst the shield is largely immune to small arms fire, it won't stop bullets with Punch-Through properties. The Shield Lancers themselves are relatively squishy, but have a nasty automatic pistol and can smack you with their shield to knock you down. Repetitively. Shield Lancers are not popular with the player base due to their habit of turning Tenno into pinballs.
** Tenno will get themselves into the shield action as well, having access to the Silva and Aegis.
* ShockwaveStomp: Shockwave Moa and Grineer Heavies. Certain bosses can do it too. The Shockwave Moa's is unusual in that the wave travels along the walls/floor/ceiling, and can be jumped over. Players can jump and melee for their own version (which varies in effectiveness depending on the melee weapon used; a massive battleaxe will send enemies tumbling, while attempting the same with a dagger is... ineffective), and the Rhino warframe also has one as an ability.
* ShortRangeShotgun: At present, shotguns come in six flavors - the Bronco (pistol), Strun (semi-auto), Boar (full auto), Brakk (pistol), Tigris (double-barrel) and Hek (quad-barrel). The first four can't hit anything out past ten feet out or so, while the the latter two [[SubvertedTrope can put most of their many, many pellets on a human-sized target from across a room.]]
** ShotgunsAreJustBetter: ...for that reason, the Hek and Strun Wraith are often considered the overall best guns in the game. The former has a very high mastery level required to unlock, while the latter was only available as part of the Survival Weekend event and does much more damage than the default Strun. Brakk used to fit in this category, having both a long range, extreme damage to all factions (damage calculation tended to give each individual pellet a damage upwards of 20) and a balance of stats, but was {{Nerf}}ed in 11.2.1 to have more damage falloff at range and a slant towards Impact damage.
*** This trope still applies in a more general sense, as shotguns offer good damage, and very good ammo efficiency, as they usually require far less shots to down a target than a rifle, with the same rate of ammo drops.
* ShoutOut: Internal and highly complicated. Early on, back in 200'''4''', Digital Extremes had drawn up a design document for a ''very'' ambitious game which they called ''Dark Sector''. Unfortunately they simply couldn't manage to successfully pitch it to any publisher in its state at that point, and so it went through multiple revisions until it turned into the VideoGame/DarkSector that was actually published in 200'''8'''. ''Warframe'' is [=DE=] going back to their original design document and finally designing the game they wanted to make all those years ago. [[http://www.giantbomb.com/articles/closing-digital-extreme-s-psychic-wound/1100-4555/ This article explains it all in more detail]].
** The 5.4 closed beta update was called [[MCHammer Hammer Time]]. Also, it adds a giant hammer.
** A subtle, fairly-easy-to-miss one; a mission/zone in the Mars region is named ''[[RedFaction Ultor]]''.
** The iconic Glaive weapon from ''Dark Sector'' (itself a ShoutOut to the movie ''{{Film/Krull}}'') was added to the game as a usable weapon. The description is also a shout out to the game by calling it "the weapon of the first Tenno".
*** The Tekna 9mm, the default pistol, is used in {{escort mission}}s as a place holder for the hostage's weapon.
** The Miter blade launcher both references VideoGame/UnrealI and VideoGame/UnrealTournament (the latter of which Warframe was meant to be a sequel to), being a gun that fires out slow-moving sawblades, and closely resembles VideoGame/{{Tribes}}' iconic Spinfusor, which also fires discs, albeit energy ones that explode. The Drakgoon shrapnel cannon and Stug goo-launching pistol are also extremely similar to their Unreal precursors (the Flak Cannon and GES BioRifle, respectively).
*** The Quanta takes after the Shock Rifle, firing slow-moving energy cubes that can be detonated with the primary fire mode.
** [[MortalKombat Grineer Scorpions]] can pull you into melee range with a grappling hook.
** Update 10 introduces scarves to our merry band of space ninja, similar to the ones seen in VideoGame/{{Shinobi}} and VideoGame/{{Strider}}.
** A new weapon from Update 10 at first looked like it with the name [[TabletopGame/{{Warhammer 40000}} Dakka Prime.]] though this turned out to be a longsword and more a reference to the city of Dhaka. After players complained about the misleading name it was renamed Dakra Prime.
** Ember's old profile had the description for World On Fire with [[Film/TheDarkKnight Some just want to watch the world burn.]]
** Update 12.1.0 included a ''VideoGame/FlappyBird''-style hidden minigame.
** Hydroid is a [[Film/PiratesOfTheCaribbean pirate with tentacle-like appendages coming from his mouth and the ability to control massive eldritch tentacles.]]
** [[https://warframe.com/news/devstream-overview-tennolive-edition The Devstream Overview article]] for Update 15 makes note of the Archwing's fan-perceived similarity to a [[MobileSuitGundam Gundam]].
** The first combat mission for the Archwing is called [[Franchise/StarWars Trench Run]], on top of the entire plotline of a secret order of samurai-influenced warriors fighting against a corrupt empire that fields cloned stormtroopers. The Grineer Dargyn (the standard Grineer enemy in Archwing) also shares the shape and design of the Slave One, albeit scaled down and unable to turn into a tank.
** In the Archwing reveal trailer, Ordis complains that [[Franchise/StarTrek he's a ship AI, not a weapon.]]
* SightedGunsAreLowTech: The vast majority of primary weapons have no sights.
* SissyVillain: Defeating Alad V. will make him cry pathetically.
* SlideAttack: Generally more powerful than regular attacks, and are easy to pull off. When used with Dual Zoren and the Amphis, a handy way to get around.
* SlippySlideyIceWorld: The Corpus Outpost set, consisting of a set of Corpus Outposts and structures built into a big ol' snowy and mountainous landscape. Fortunately it's not slippy or slidey, but there's definitely a ''lot'' of snow and ice. There's also the 'ice' enviro-hazard, which halves your shield capacity for the duration of the mission. Yes, you can have the ice hazard on the Corpus Outpost set.
** While also not as slippy or slidy, the new Corpus Ice Planet set is [[ExactlyWhatItSaysOnTheTin as its name suggests]]: a planet full of ice. There's even a sign on the set that says ''Slippery When Wet'' in Corpus.
* SmallSecludedWorld: Orokin Void Towers, which can only be accessed using special 'Void Keys' in conjunction with special portal structures. The Towers themselves appear to be part safehouse, part fortress, and part panic room; loaded with traps and defenses, and guarded by a sinister 'Neural Sentry' that seems to be capable of [[BrainwashedAndCrazy assuming control of weak-willed invaders]], or [[AnimateDead 'reanimating' those who fall victim to its traps]].
* SmokeOut: An ability of the ''Ash'' warframe (also used by a couple of the bosses) makes the user disappear in a puff of smoke and renders them invisible for a few seconds. It also [[{{Knockback}} staggers]] all enemies in a small radius around the user, so it's very useful for making a quick getaway.
* SmugSnake: Alad V., a Corpus goon who works directly for its board of directors. During the Gradivus event, siding with him will have him passively aggressively taunt the player over the soon-to-be loss of the Tenno that he managed to kidnap from cryosleep. Fighting ''against'' him will have him offer you twice the payment of whatever Sargas Ruk's paying you to beat the hell out of his forces.
* SoLastSeason: The PS4 trailer shows Volt shooting at a Zanuka with a Soma, but to little effect. This is reflected by Damage 2.0 (introduced in the same update as Zanuka) making the Soma not-so-top-tier.
* SniperPistol: The ''Lex'' handcannon is pinpoint accurate even over long range. Though it lacks a proper scope for optical zoom like the Snipetron or Seer, it can be a very effective sniping weapon. The Lato Vandal has similarly high accuracy. You can also potentially turn any side-arm into this, provided you use a mod that increases the zoom distance.
* SpeakingSimlish: Whenever the commander of the enemy forces in a solar system taunts you, it's in this, despite in-game phrases being translated to English. Grineer ship markings are also a strange language. Eventually, both Corpus and Grineer mook will have their own languages and will use it instead of English. Grineer foot soldiers already had their language update, and the Corpus one is in the work.
* SprintMeter: Stamina. Depletes when you sprint or block, replenishes at all other times. Jumping or fighting in melee costs Stamina, but doesn't stop it from regenerating. Some mods affect how fast it recharges and how much you can store.
** GoodBadBugs: If you crouch while sprinting you forward slide for one second at sprint speed, but since you aren't ''running'', the SprintMeter refills. This can really help you dash around in a fire fight.
* SpyCatsuit: Nearly all of the Warframes are form-fitting, making it easy to tell [[BreastPlate who's female, and who isn't.]]
** Averted with Zephyr, which actually looks like she is wearing an armor, and whose gender can be quite ambiguous to uninformed Tenno.
* StealthInSpace: Enemy radio chatter mentions that the Tenno's Liset ships have 'void masks' that make them invisible to sensors, although 'void echoes' can still be detected. Sometimes. Certainly the view out the Liset's windshield indicates that the Tenno are in the habit of hanging around directly in the middle of Grineer and Corpus fleets without fear of being found.
* SticksToTheBack: Melee (exception of both fist weapons) and primary weapons stick to the back, whilst pistols and kunai holsters stick to your hips. Advanced technology is involved, so it's probably excusable.
** A particularly notable variant is the Glaive, which Sticks To The Forearm, without even being placed there. It just... retracts.
* StockWeaponNames: Gram and Reaper Prime.
* TouchedByVorlons: The Tenno are granted their supernatural powers by the Void. [[spoiler:However, there's evidence that they have horrible bodily afflictions in return, which is why they must wear Warframes.]]
* TheStraightAndArrowPath: The ''Paris'' bow is very effective, as are ''Dread'', ''Cernos'' and ''Paris Prime''.
* StuffBlowingUp: The Tenno decided things would be more fun if they had rocket launchers... so they reverse-engineered the Grineer ones. You can guess what happened next, right?
** The Nova Warframe specializes in this, having one ability that fires an explosive which can absorb and reflect damage, and an ultimate ability that [[WhyAmITicking turns enemies into bombs when they die]], starting off a chain reaction of explosions.
** On the enemy side of things, quite a few bosses have some sort of bombardment - both Raptor and Jackal unleash a flurry of homing missiles that explode a good chunk of the arena, and Kela carries an Ogris.
* [[StunGuns Stun Prods]]: Corpus Prod Crewmen and Grineer Powerfists both use electrified clubs/shock prods to attack you. The Prod Crewmen don't do a whole lot of damage, [[{{Knockback}} but the hits have a high chance to make you stagger]], leaving you open to other attacks or followup strikes. Powerfists are just {{Glass Cannon}}s with the swing speed of a MightyGlacier - huge warmup time, but they hit ''hard''. The Tenno can also use these in the form of the ''Prova'' baton - devastating against Corpus, but usually less so against other factions.
* SuperPrototype: The ''Prime'' equipment (Excalibur Prime, Latron Prime, etc.) has vibes of this, being the original designs from the Orokin era as opposed to the derivative equipment that modern Tenno craft with their own hands using lesser materials. The power level of the Prime equipment varies wildly by items - Prime Warframes, for example, have one affinity slot and a special Orokin helmet, while the weapons will have at least one advantage, however minor, over their regular counterparts. For example, Glaive Prime flies slightly faster - compare to the Braton Prime, which is superior to nearly all assault rifles.
* SwordAndGun: The Tenno are stated to be masters of sword and gun combat.
* SwordLines: All melee attacks tend to have a brief blur/distortion, but the effect can be made more pronounced by enabling permanent melee weapon trails or channelling energy into your weapon. The exact effect also varies from weapon to weapon; plain swords like the Skana have a clean and simple trail, the Fragor and Galatine have thicker and more jagged trails that give them a more powerful feel, whilst the Prova shock baton has four individual trails with an electricity-esque aesthetic.
* TechnicolorNinja: The colours available to the Tenno to customize the appearance of their warframes and weapons range from pure black to pure white. So you could be stealthy, with muted tones and subtle colours... or you could be lime green with hot pink highlights and dark blue glowy bits.
* TeleportersAndTransporters: The Loki Warframe can unlock an ability that allows it to instantly switch places with enemies, teammates, or the HardLight decoys it can create. Creative players have learned to use this to teleport across large rooms and thus easily bypass hordes of enemies, or annoying/time-consuming map segments, amongst other things. The Nova skips a step and just creates one-way portals between locations. The Ash Warframe may also teleport himself into melee range of an enemy.
** High-tier Grineer melee troopers can teleport close to get the drop on you, and Grineer Captains can do this to the ''player'' - often to dump them in a room with a Heavy Grineer or in the middle of a pack of shotgunners.
* {{Terraform}}: Corpus outposts on Venus and Mars are set in snowy areas, strongly implied to be due to the Orokin, while Phobos has a breathable desert atmosphere. Earth itself was turned into a gigantic jungle to preserve the cities underneath the flora. You are also sent to missions on Earth to ''stop'' the Grineer's attempts at terraforming Earth for themselves by destroying their machines being used to poison the jungles.
* ThrowingYourSwordAlwaysWorks: The 'Reaping Spiral' scythe stance features [[http://youtu.be/D1tQ0wedtjY?t=9s one combo]] where your warframe throws said scythe like a boomerang in front of them while flipping forwards to catch it again.
* ToThePain: Hyena packs are programmed with rather brutal defense and offense mechanisms, as they'll be glad to announce to you. Close-quarters combat? ''Evisceration.''
* TooDumbToLive: Alad V. has shades of this. From provoking the Grineer into open war to insulting Tenno who are willing to support him. All resulting in the TraumaCongaLine detailed below.
* TraumaCongaLine: This has not been a good month for Alad V. First, he kicked off a war between the Grineer and the Corpus by trying to steal Tenno cryopods, and was an abject failure at swaying the Tenno to his side. The board promptly withdraws funding for his war, leaving him in massive debt, and an angry CEO sending the Tenno and Corpus personally after him to collect what's due. The Tenno find him, smash the crap out of Zanuka and free the remaining Tenno, and personally give him a discount on their ammunition supplies.
* TronLines: Corpus ship exteriors.
* TurnedAgainstTheirMasters: If the Stalker is to be believed, [[spoiler:the Tenno killed the Orokin.]]
* TheVirus: The Technocyte Plague, apparently a weapon from the old war, something unleashed by the Orokin to end it. It evidently [[{{Understatement}} escaped their control in some fashion]] and [[GoneHorriblyRight worked too well.]] Cue BodyHorror.
* ThisCannotBe: Defeating the Stalker (fairly hard for new players, but far from impossible) yields quotes such as this;
-->'''Stalker:''' ''"No!? This is not... possible."''
** Alad V. is quite unhappy when you destroy his favorite toy, Harvester.
* UnfriendlyFire:
** Done indirectly through the usable lasers in Orokin Tower Defense. In fact, it's fair to say that most Tenno casualties in [=T1D=] are caused by someone activating a laser.
** Proccing the Radioactive status effect on an enemy will make him turn on his allies very quickly and vice versa.
* UniversalAmmunition: There are four ammo types - pistol, rifle, shotgun, and sniper - ColorCodedForYourConvenience. How universal is it? All sidearms/secondaries share the 'pistol' ammo type. Possible secondary weapons include; a handcannon, a pocket shotgun, a pair of bolt pistols, or ''throwing knives'', just to name four of them. A Grineer Assault Rifle and Corpus Plasma Rifle can even run off the same rifle ammo pack. Despite the fact one shoots bullets and the other shoots ''plasma bolts''.
* {{Unobtanium}}: Common materials seem simple enough - for example, "Ferrite" could be some kind of future iron alloy. But then you get into Detonite, Fieldrons, Orokin Cells, Neurodes, Morphics, etc.
** Worst off are the Mutagen Samples, which as of Update 10 can ''only'' be obtained from the Orokin Derelict missions.
* UnorthodoxReload: Many weapons don't actually swap magazines/batteries/whatever when reloaded; the Boltor has a lever that apparently reloads an internal magazine, the Synapse is tickled, the Ogris has a pair of buttons to be smacked in, et cetera.
* UsedFuture: Grineer galleons, their space vessels. They're spotted with rust, are grimy, and dirty. It's stated they rely on ancient technology over and over, which is why their weapons also look so old.
* UselessUsefulStealth: Update 7 introduced {{Back Stab}}s. However, there are enemies that are either outright {{Kung Fu Proof| Mook}} or otherwise too durable to be {{One Hit Kill}}ed with them, which thus leads to the attackee in question setting off an alert. Furthermore, there is no exp bonus for doing stealth kills or a full StealthRun other than an occasional challenge. This is counterproductive to your leveling, since you would normally want more enemies to kill for more exp.
* VideoGameCaringPotential: Update 14 included the ability to breed and raise Kubrows, which are essentially large dogs. Players are allowed to pet their Kubrows when they're inside their ships (and required to, to build a strong enough companionship to take them into the field).
* VideoGameFlamethrowersSuck: Averted. The Ignis flamethrower is a very strong weapon with a wide AOE.
* TheVoiceless: The Tenno never vocalize at all, no matter what happens to them - not even on death. [[TheBerserker Valkyr]] [[ScreamingWarrior is the notable, and very noticeable, exception.]]
* VoiceWithAnInternetConnection: The Lotus. She provides information on your target during Assassination missions, and helpfully warns you of incoming enemies and such.
* WaveMotionTuningFork: The Corpus ''Dera'' rifle has a distinctive tuning fork-esque design to its barrel, though it fires [[RayGun bolts of plasma]] as opposed to beams.
* TheWarSequence / BigBadassBattleSequence: The Gradivus Dilemma, featuring huge-scale, epic battles between large hordes of Grineer and Corpus, with the Player in the middle, fighting for one side or the other.
* WeNeedADistraction: The rationale for Survival missions - the player's cell has to distract the stage enemy while another group of Tenno, "Alpha Team", conducts a raid offscreen.
* WeWillWearArmorInTheFuture: The Grineer make heavy use of this trope, prefering physical armor in place of energy shields. However as many players will tell the armor is quite effective and high level Grineer tend to bullet sponges because of it.
* WeaponOfChoice: On top of all the guns, we have;
** AnAxeToGrind: Scindo, a gigantic double-bladed axe - the head is wider than the torso of most Warframes. Also, the Dual Zoren; a pair of smaller axes. The Ether Reaper, despite its name, resembles a great axe much more than a scythe. The Dual Ichor are considered axes by lore, but they resemble heavily cancerous bone shaped into short swords.
** CoolSword: Skana, Dakra Prime, Machete, etc. - there's about a dozen or so options to choose from. [[DualWielding Sometimes paired with a knife]].
** BladeOnAStick: The Orthos and its Prime variant.
** {{BFS}}: The Gram, which is a massive greatsword with laser edges; and the Galatine, a massive claymore-style sword taller than the Tenno who wields it.
** DropTheHammer: Fragor, a gigantic hammer - like Scindo, the head is almost as big as the wielder's torso! It also comes in a spiked version, used by the Grineer - and by one of their commanders, Lech Kril, a brute obsessed with with own hammer. Now featuring the Jat Kittag, as a Jet Hammer.
** DualTonfas: The Kronen, which are massive and bladed for extra fun.
** FlamingSword: The Silva sword bundled with the Aegis shield. The blade is made of fire, after all.
** KnifeNut: Various flavors of dagger, either alone or [[DualWielding in pairs]]. Variations includes cleavers and throwing knifes.
** LuckilyMyShieldWillProtectMe: The Aegis shield bundled with the Silva sword.
** MacheteMayhem: The Grineer ''Machete'' - exactly what it sounds like.
** PowerFist: Furax, Kogake, Obex and Ankyros. The Furax in particular are an uncomplicated demonstration of this trope. The Kogake and Obex are a little more subtle, whilst the Ankyros are much more ornate and flashy.
** SimpleStaff: [[ExactlyWhatItSaysOnTheTin Bo]], whose simple appearance belies it's ability to send enemies flying. There's also the slightly less simple ''Amphis'', which has [[ShockAndAwe extra electrical effects]].
** SinisterScythe: The ''Hate'', ''Reaper Prime'' and Ether Reaper - though the latter two look quite the opposite of sinister. The ''Hate'', on the other hand? Totally sinister; it's used by the Stalker. The ''Kama'' (and ''Dual Kamas'') is a much smaller scythe.
** WhipItGood: The ''Lecta'' is an electrified whip of a distinctly Corpus design, the ''Scoliac'' is the Infested's take on a whip, and the Grineer ''Atterax'' is less a whip and more a flail with [[ThereIsNoKillLikeOverkill multiple spinning sawblades]].
* WeaponTwirling: The staff weapons feature a bit of this, but the scythes are the king of this trope. Every attack is followed (and sometimes started) by your warframe spinning the massive weapon around in one hand.
** The Jat Kittag brings this trope to a new extent: the weapon is twirled around by the Tenno several times before spinning around with the weapon itself, at great speed. This is due to the [[RuleOfCool jet engine built into the back of the head.]]
** The Fragor gets in on the fun with the Crushing Ruin stance, giving the player an attack that lets them charge forwards twice, each time launching into a massive whirling hammer attack.
* WeAREStrugglingTogether: With the rise of the Syndicates, each opposing the Grineer and Corpus and each with many ideologies, it's inevitable it happen. Steel Meridian and the Perrin Sequence, ex-Grineer and ex-Corpus, respectively, are opposed, as the former prefers protection through force, while the latter prefers peace (and profit).
* WeHaveReserves: The Grineer's philosophy, where due to their cloning technology they'll just keep hammering out more clones to send into the meat grinder against the Tenno.
** The Corpus are not far off either, since most of their troops are either mass produced walking turrets, flying drones or brainwashed slave workers.
* WolverineClaws: One of the weapons introduced in update 13.9.0, Venka, is this.
* WomanInWhite: Female prisoners. Nova's default scheme is also white - fitting, given her theme of stars.
* ZergRush: The Grineer apparently rely on this in war. Due to overuse of cloning technology their troops are degrading biologically, and it's mentioned in the backstory that once they rediscovered cloning they conquered Earth through sheer numbers.
** The Corpus Moa robots are another good example. Their favorite tactic is to bunch up into a nice little horde and then charge across the battlefield and pour plasma bolts into you in full auto at point blank range. This is made significantly worse if there's a Shockwave Moa to knock you to the ground or a Railgun Moa to repeatedly throw your balance off.
** Infested come in massive numbers, more than the usual squads of non-Infested.
** Expect any defense mission to turn into this, regardless of Faction.
** Solo missions tend to send hordes of enemies barreling your way.
* ZombieApocalypse: The Technocyte Plague, some sort of biological superweapon unleashed by the Orokin in a great war thousands of years ago.
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