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* AnticlimaxBoss: As expected of the franchise, there are ways to eliminate powerful enemies besides shooting them hundreds of times (Although the Director's Cut DLC will add in various ways to do this for players who don't have many combat augmentations or guns). The Typhoon aug is potent enough to kill any boss in a few shots. Thanks to WikiMagic, gamers have figured out easy kills for all of the bosses:
** [[spoiler:Barret, the first boss,]] isn't immune to gas, be it grenades or the toxic stuff in the cylinders scattered around the area. These can be thrown halfway across the room even without the strength boosting mod. [[http://www.youtube.com/watch?v=dsa5Z4wvoa8 It only takes two of these, three tops.]]
** For [[spoiler:Fedorova]], stock up on Typhoon ammo and spam repeatedly.
*** Alternatively, PEPS and EMP grenades do wonders, provided you have the EMP shielding aug or enough healing items. Doing this may also stun-lock her, [[GoodBadBugs glitching]] her so that she doesn't move. Happy shooting.
** [[spoiler:Namir, the third boss,]] is a close-combat specialist armed with loads of grenades and a powerful energy weapon, but [[http://www.youtube.com/watch?v=4v1X5F0d58I has a glass jaw]]. Spam the takedown button as the boss mantles a wall and it's a OneHitKO. Strong hackers can hack a turret from earlier and carry it down to his boss arena, which is ''almost'' as fast.
*** You can also [[AIBreaker abuse his tendency of hopping over the walls in the room]] by pulling out a revolver with a few mods (explosive rounds for damage, laser sight for accuracy, and maybe one or two reload speed upgrades), firing repeatedly, and weaving back and forth. He'll spend so much time climbing that he'll barely have a chance to counterattack.
*** If all else fails, you can lob land mines from the elevator onto his spawn point, and they'll explode as soon as his cutscene finishes (it takes about eight land mines, though).
** [[spoiler:Hyron, the final boss,]] has a terminal to shut down life-support directly in front of [[spoiler:Zhao Yun Ru]]. Hack it or sucker the codes out of [[spoiler:Darrow]] for an easy win.
*** Alternately, [[http://www.youtube.com/watch?v=thR-sQlvrjM bring the laser rifle]] and [[WhyDontYouJustShootHim Just Shoot The Boss.]]
** The boss from the Missing Link DLC, [[spoiler:Burke]], fights you in a wide open room with a large number of flunkies. However, it's possible, if you move quickly, to get into cover and avoid being spotted by the {{mooks}}. If you're good at hacking or have certain augs, it's possible to get directly behind the boss and use a takedown without him knowing. There's even an achievement for doing this.
*** Hell, if you duck into cover immediately and stay there for a few minutes, they'll ''go back to their patrols'', even with [[spoiler:Burke]] continuing to taunt you about how it's only a matter of time before they find you. It's entirely possible -- though difficult -- to get the Apex Predator achievement along with Factory Zero.
* AuthorsSavingThrow: The Director's Cut, which was originally planned to be exclusive to the WiiU, will now be available for all current generation platforms.
* SugarWiki/AwesomeMusic: [[AwesomeMusic/DeusExHumanRevolution Has its own page.]]
* BreatherLevel: The return trip to Detroit. The previous several levels had you go up against heavily armed Belltower mercs and their complex security systems. The Purity First thugs in Detriot are nowhere near as powerful. Which makes [[FridgeBrilliance perfect sense]] considering they're not augmented.
* BrokenBase: While there was one for console and PC gamers when they didn't know if the Director's Cut would be released for their systems, XBOX and PS3 players are annoyed at how they have to buy the game all over again, and even more so if they paid for the DLC that'll be included in the Director's Cut.
* ComplacentGamingSyndrome: The developers went out of their way to avert this. Firstly, ammo is always very scarce and doesn't stack well, so you can never go hog-wild with rapid fire weapons. Secondly, important dialogue scenes don't always have the same triggers or flow; you can't always get the same reactions out of people by sticking to the same verbal stance throughout it. And don't get used to always being able to fight enemies the same way; the endgame involves a total shift in combat strategy.
* CreatorWorship: The original ''VideoGame/DeusEx'' was a personal project of Warren Spector's. News that ''Human Revolution'' was being made without much input by Warren Spector was poorly-recieved. Initially even Warren Spector was displeased by this news, although he changed his tune after getting to see Eidos Montreal's work.
* DisappointingLastLevel:
** Not as bad as the other games, but it starts to replace the mission hubs with singular levels after the final visit to Shanghai. It's actually justifiable, because Adam closes in on the conspiracy so why would he want to waste time doing random side missions for people? In real life, the main reason for the lack of a 3rd mission hub is the game needing to be released on time but the 3rd hub not being close enough to completion to justify any additional delay.
*** Sadly we'll never get to see [[WhatCouldHaveBeen the streets of Future Montreal, or the heights of Upper Hengsha]]
** The FinalDungeon [[spoiler: replaces enemy soldiers with pseudo-zombified humans turning the game into either a low skilled massacre or a game of running away.]]
*** WordOfGod is that Eidos Montreal wishes they had done a better job handling the final mission, though the design intention was always to have the gameplay change suddenly.
** The [[VideoGame/DeusEx first game]] sort of did this as well, especially after you got to Vandenburg. It is much more noticeable in ''Human Revolution'', though, since it is shorter than the original.
* EnsembleDarkhorse: Malik became the most popular woman of the game quite fast. It makes her [[spoiler: death a way too powerful PlayerPunch for a lot of players who dropped their PacifistRun at this point or when her body is discovered at the Harvesters' hideout for a RoaringRampageOfRevenge killing spree instead. For the people who managed to save her, her thanks are depicted as a CrowningMomentOfHeartwarming]].
--> '''Adam Jensen''': Anytime, Fly girl.
* FandomRivalry: One is already developing between ''Human Revolution'' fans and ''Franchise/MassEffect'' fans. The music and general genre of the two make them natural rivals. Although there is a very large overlap between the fanbases of the games. A lot of people actually liked both titles.
** Ironically enough, the creators of Mass Effect designed the ending choices of the trilogy to mirror that of Deus Ex, leading to the infamous ending.
* GameBreaker: The Typhoon aug, when fully upgraded, makes mincemeat of the first three bosses. Use it, stun the boss, repeat. This is seemingly intentional however, as the game proper begins with the Typhoon aug prototype almost getting stolen.
** The Casie Mod turns any dialogue boss into a joke; just pop the pheromones when you can and select for the whatever's giving the strongest result. You'll win every time.
*** There are occasions where the person you're talking to recognizes what you're doing, but these are few and far between.
*** Also, like the game says, this might not get you the best outcome, just enough to have things go your way. For an example, check TheWoobie entry below.
** The Linebacker grenade launcher, which is a PreOrderBonus, can kill the third boss in seconds.
** As mentioned below in GoodBadBugs, there's a glitch which will allow you go get all 68 Praxis points and fully upgrade ''every single aug you have'', max out your points early on and you can breeze through the game with ease.
** PunchPackingPistol: Per any ''Deus Ex'' title, the standard pistol is a reliable and accurate medium-range weapon with plentiful ammo. What makes it a Game Breaker is the armour-piercing upgrade, which allows you to take out almost every mook you come across with one or two headshots. Heavily-armoured enemies can otherwise take ''several'' clips to bring down.
** RevolversAreJustBetter: A revolver with the Explosive Rounds mod can one-shot just about anyone without armor. It's not too shabby on bosses, either.
** Have the strength aug, hack augs and found a gatling turret standing around? Reprogram the turret and carry it around to get rid of any enemy since the thing has A) infinite ammo B) deals incredible damage C) is near unbreakable. If you are not seen carrying the thing, you even get the "Ghost" bonus.
* GeniusBonus / MeaningfulName: [[spoiler: Eliza is an AI, which was [[http://en.wikipedia.org/wiki/ELIZA the first program to mimick human intelligence]]. The room where you first "meet" her is Room [[http://en.wikipedia.org/wiki/HTTP_404 404]]. The room where her program is housed (and her signal is broadcasted from) is Room [[http://en.wikipedia.org/wiki/802.11 802-11]]]].
* GoodBadBugs: There's a glitch you can exploit that allows you to get infinite XP, allowing you to get all 68 Praxis points and max out ''every single Aug you have''. Simply save your game in front of a computer, then hack it (nukes make it much easier). Once you've finished hacking and your reward is displayed on screen, exit the computer before collecting your reward, then reload your last save and complete the hack again. Each time you repeat this process, your XP reward for completing the hack will double. Just make sure you have a few hours to spare.
* HarsherInHindsight:
** While working on story details for ''Human Revolution'' back in 2007, the devs came up with [[http://content.usatoday.com/communities/gamehunters/post/2010/12/five-things-you-didnt-know-about-deus-ex-human-revolution/1 the idea]] of having Detroit become a major bio-tech center after an auto industry collapse. Little did they know that a real crash would happen the following year.
** Aaand now Detroit is bankrupt, two years ''before'' the game's backstory had it happen. You know things have gone to crap when your TwentyMinutesIntoTheFuture dystopian science fiction ''overestimates'' the amount of time it will take a major city to hit bottom.
** Not to mention protests over class disparity turned out to be very on the mark shortly after the game's release.
** Detention policies for American citizens hit closer to home with recent developments in the [[http://www.salon.com/2011/12/15/obama_to_sign_indefinite_detention_bill_into_law/singleton/undefinedsingleton/ government.]]
** Blink and you'll miss it, but one of the scrolling texts underneath news broadcasts mentions that there has been a tsunami alert in Japan, but it is expected to be harmless. [[http://en.wikipedia.org/wiki/Japan_tsunami Not so much in real life.]]
** The whole theme of technology that could potentially benefit all of humankind having secret backdoors for the benefit of a small powerful group. Edward Snowden revealed the truth about the NSA a few years after the game's release.
* HoYay: Pritchard becomes more... ''concerned'' about Jensen late in the game.
** And after Jensen [[spoiler:goes MIA for a few days]], Pritchard expresses a desire to keep Jensen on a leash.
** When you first talk to Wayne Haas, he sounds more like an angry ex-boyfriend than anything, right down to complaining that it's the first time you've talked in two years, and it's only because you want a favor.
* InferredHolocaust: [[spoiler: Even if you don't decide to pick "Destroy Panchea" ending, disabling Hyron Project inevitably leads to station's annihilation, since there's no computer to redirect waves and control the pressure of the Arctic Ocean. Further reinforced when Bob Page mentions salvaging remains of something (most likely Panchea) for Morpheus Initiative. Hopefully Adam had time to escape via submarine in the room where Sarif was hiding from crazy workers.]]
* IronWoobie: Adam, for the most part. He does allow his angst to show at occasional intervals, but for the most part he just swallows his despair and tries to get on with his life, dangerous though it may be.
** Adam is also a [[IncrediblyLamePun near-literal Iron Woobie]].
* MemeticMutation:
** "I never asked for this..."
** "I'll never stop looking."
** "I don't even know which side I'm on."
** [[http://www.youtube.com/watch?v=9a8r7xQvS1g Well sheeeeeit]], [[SassyBlackWoman if it ain't the cap'n hisself!"]]
** "And then Adam went to China."[[note]] The obligatory comment on a video of Adam engaging in some [[VideoGameCrueltyPotential Video Game Cruelty]]. Originates from the aforementioned [[http://www.youtube.com/watch?v=whtNHRYJnrU Adam needs a new mirror]] video.[[/note]]
** "Rest in peace, Big Rizzle." "Yeah, rip."
** Several game videos have already gone viral. In particular, Adam Jensen [[http://www.youtube.com/watch?v=whtNHRYJnrU needs a new mirror]] and is [[http://www.youtube.com/watch?v=Y414Q7vVgYU an excellent dancer]].
** "I like everyone, Doctor Reed."
** [[http://imageshack.us/photo/my-images/853/dscf2269d.jpg/sr=1 Win an Action-Packed Trip to Detroit!]]
* MoralEventHorizon: Narhari Kahn and Belltower as a whole cross this when they [[spoiler:open fire and kill everyone in the Alice Garden Pod apartment complex, despite the fact that everybody, including the one hacker they were after, were unarmed civilians.]]
** [[spoiler:Hugh Darrow inflicting an immense amount of pain and mental trauma on potentially hundreds of thousands of people, killing many of them.]] While he did regret it (depending on your dialogue choices) later on it's even worse when you consider that he was partially motivated by something as petty as jealousy.
* MostAnnoyingSound:
** ''"BAHMS AWAY, BOY SCOUT!!"'' isn't particularly annoying the first time, but after [[spoiler: Barrett]] says it for about the tenth time? Really obnoxious.
** [[http://www.youtube.com/watch?v=hVe2Jlq4FiE "You wanna play DIRTY? That's enough. You wanna play DIRTY? That's enough. You wanna play DIRTY? That's enough. You wanna play DIRTY? That's enough. You wanna...]]
** "Ijustmovedherefromthecountryquiterecently!"
* MostWonderfulSound:
** The chime that plays when you hit the start button after starting up the game.
** When Jensen says the following three words: "Anytime, Fly girl."
** The original UNATCO leitmotif that plays when entering Sarif Industries for the first time in the intro.
** [[spoiler:When the game finishes, after the secret final cutscene ''then'' you get the original Deus Ex theme]].
* NoSuchThingAsBadPublicity: The leaked beta convinced a lot of the haters to switch teams.
* OnlyTheCreatorDoesItRight: The game was starting to receive this... until the beta was leaked. Even then, angry nostalgic gamers were still upset, to the point a mod mocking it was made for the original Deus Ex.
* ParanoiaFuel:
** Visiting the basement of Picus and snooping in their files shows how easily and to how great an extent mass media can manipulate people. But it's just a plot point of a ConspiracyTheory game, right? Right? Wrong. Picus is a thinly veiled {{Expy}} of [[FoxNews NewsCorp]]. Which already controls an obscene amount of media ''[[http://frugaldad.com/2011/11/22/media-consolidation-infographic/ worldwide]].''
** Adam himself, especially during a stealth run. So there's this guy in the building, right? And we keep finding our buddies dead/unconscious on the floor, right? But we've still got (dwindling) numbers and familiar ground and security systems on our side, so we should be able to at least ''find him'', right? Right?... Guys? Hey, [[KilledMidSentence where did everybody]]--
* PlayerPunch:
** [[spoiler: Malik's death, if you let it happen.]]
** [[spoiler: Made all the worse when you reach Tong's HQ in the parking garage, and her corpse is on one of the tables having been stripped of augmentations.]]
*** Multiple players have enraged enough at the attack that they instantly abandoned their [[PacifistRun Pacifist Runs]] to kill every single damn Belltower merc in the zone. Or [[spoiler: after failing to save her or not realising they can save her, the player then abandons the pacifist run after seeing her corpse desecrated and stripped of augmentations like a lab rat.]]
* SequelDisplacement: Because of the large gap between the release of ''HR'' and ''VideoGame/DeusExInvisibleWar'', this was many players' first ''Deus Ex'' game. Since ''HR'' wasn't a NumberedSequel like it was originally going to be, and any references to the original games would only be picked up those who've already played them, it isn't uncommon to find players unaware of the first two games.
* SidetrackedByTheGoldenSaucer: There are ''so many computers'' to hack. Almost none of them are strictly ''necessary'' to hack, but the minigame lets you hack literally hundreds of computers over the course of the game. When you enter a large office area, espect to drop at least ten or twenty minutes just running around hacking every computer in sight for experience and money.
* SpecialEffectsFailure: The takedown animations:
** They are keyed for the standard character model size. Fair enough. But there are a few enemies (i.e. Ogres) that are a bit larger than everyone else, and the animation for their takedowns remains the same. So if Jensen performs, let's say, his HeyYouHayMaker on an Ogre, he taps the small of their back (rather than the shoulder) and punches them in the heavily armored chest.
** The spacings for the animations expects a certain amount of room. If you're in a particular cramped area or are on top of something, some of your enemies would end up clipping through the geometry or even through the camera itself (resulting in part of them being completely see-through). One of the Lethal Double Takedowns involve Adam throwing one guy on another and then stabbing both; if you happen to do this in a narrow hallway Adam will slam them against the wall, then ''headbutt'' half his torso through the wall while the two guys ragdolls.
** Since Takedowns are scripted, when you're facing multiple enemies you'll see that they're frozen in place. Normally the animations are chosen in such a way that you don't see this, but during the fight on Panchaea, due to the larger amount of enemies going for your face, you'll see a bunch of them either in mid-stride or mid-jump.
*** Not to mention that the takedowns stay the same regardless of who Jensen is taking down. Which for example, means a pair of street prostitutes will engage in a quick series of kung-fu blocks and counter-punches before Jensen puts them down.
* SurprisinglyImprovedSequel: ''Invisible War'' was basically the ''epitome'' of ContestedSequel. Fans took much more kindly to this one. While the first will probably never be topped, this is seen by most as a worthy successor.
* ThatOneAchievement: Playing basketball, of all things, since Adam tosses the ball really hard and the ball is inexplicably well inflated for a back alleyway in Detroit.
* UncannyValley: The running animations that the [[spoiler:cyberzombies use at Panchaea]] seem a bit... off.
* VindicatedByHistory: The game was overlooked by many when it came out, as 2011 was chock full of great titles, but when Game of the Year discussions came up later on, ''Human Revolution'' was on the short list in just about everyone's book, prompting some to give it a closer look.
** The game won five awards at the 2012 Canadian Videogame Awards, including the high profile Console Game of the Year award.
* WhatAnIdiot: If you choose to confront him, Zeke Sanders is this. Instead of turning his weapon on the very dangerous cyborg just a few feet away from him, he takes the time to push Josie Thorpe to her knees and tries to shoot her, giving you ample time to shoot or knock him out first.
* WhatDoYouMeanItsNotPolitical: The entire augmentation debate is just like the abortion debate. Clinics built for augmentations being protested and firebombed by detractors, supporters declaring that it is their body and they will do with it what they like, and people against it using religious statements to oppose it. In one protest, you can see signs that say, "I regret my augmentation" much like "I regret my abortion signs." And much how in real life how people on the fence about abortion will say "I don't mind it in cases of rape, health issues, or incest," one can hear characters say "I don't mind it in the cases of amputees." The Humanity Front and Purity First has many real-world analogies, with a legitimate political group sharing goals and views with a terrorist organization, such as Sinn Féin and the IRA or Animal Rights groups and the ALF. Conspiracy-wise, Sarif Industries is under fire for trying to end Neuropozyne dependency, and in Real Life, there are proposals to develop [[http://en.wikipedia.org/wiki/Embryo_transfer embryo transfer]] to the point that abortion would not be lethal to the fetus - these cannot get off the ground due to anti-technologists protesting stem cell research... and stem cell researchers would probably rather not have the supply of aborted fetuses for stem cells cut off. The anti-aug crowd want augs eliminated, and Versalife is making a killing on Neuropozyne.
** [[http://unitedfederationofcharles.blogspot.com/2012/03/social-satire-of-deus-ex-human.html One fan's essay on Deus Ex: Human Revolution's Social Satire]] covers some of the issues nicely.
*** He also wrote a sequel on the DLC. [[http://unitedfederationofcharles.blogspot.com/2012/03/social-satire-of-deus-ex-human_27.html The Missing Link Social Satire.]]
*** Some would argue that the game also satirizes the idea of global warming with Darrow's Panchaea. [[RuleOfCautiousEditingJudgment This may or may not be the case,]] [[WhatDoYouMeanItsNotPolitical but isn't that how it always is?]]
* WinBackTheCrowd: Successfully won people back to idea of more ''Deus Ex'' games after the disappointing "Invisible War'' eight years earlier.
* TheWoobie: Haas, just [[TearJerker Haas.]] He is ordered to shoot a 15-year-old kid, then is blamed for it even though he was not in charge, then gets demoted to a desk job, then his family gets upset with him because of his demotion, [[spoiler: then he gets ''fired'' because he let Adam into the police station, then he gets a job at Sarif Industries under Adam, and depending on the ending, Sarif Industries itself might collapse or at least end up without David Sarif or Adam Jensen to keep the company afloat.]]
** [[spoiler:And if Adam uses the CASIE mod to get access to the Police Station, after getting fired he shows up at Adam's doorstep and tries to KILL him]]
** [[spoiler:On the other hand, if you enter the police station through the sewers, he gets to keep his job at the police station, small comfort that that is. Hacking his computer will reveal that his marriage is in trouble as well.]]

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