History Main / ThatOneAchievement

** ''Melee'' had one trophy received by obtaining every possible bonus you could at the end of a match. While about 90 percent or so were easy to get either through skill or sheer luck, there was one bonus called "Lethal Weapon" which involves you using a character's ''entire'' move set on an opponent ''without'' using consecutive moves, which means all of the basic moves, special moves, throws, and everything else in that character's arsenal had to connect with an opponent. This is especially difficult with using directional moves since the attacks have properties that restrict buffering additional attacks in weird ways, so you might do another forward attack when you try to do an upward attack, or something like that. The best part about this, is you have to connect all of these moves on ''one'' opponent ''without'' defeating them. Have fun trying this, and be proud if you ever achieve this bonus.

** ''VideoGame/SonicGenerations'': Can't Touch This. Making it through the FinalBoss (also ThatOneBoss) [[NoDamageRun without taking any damage]]. This is made ''significantly'' worse by the fact that [[spoiler: you're Super Sonic, and therefore, invincible during the last boss. Taking a hit doesn't HURT you, it just slows you down, so there's no real indication that you're "taking damage".]] There's also "Greased Lightning", earned by beating Green Hill Act 1 in under a minute. Not only does a typical player usually end up with at least about 1:30.00, but since the physics of this game aren't the same as the original Sonic the Hedgehog, be prepared to start over and over and over from missing one jump due to either a glitch, or the game's movements not responding until half a second after the button input and some of the red rings are ''ridiculously'' hard to get (the first one in City Escape act 2 comes to mind)
** Following the tradition of ''Sonic'' games giving achievements for not taking a hit during a boss battle, we have the 2011 re-release of ''VideoGame/SonicTheHedgehogCD'', in which you can get an achievement for beating Metal Sonic without being hit once. Good luck.

** The Steam release of ''VideoGame/SonicAdventure DX'' (in which achievements were added some time after the game was originally released) has "Metal Sonic" and "The Perfect Adventurer", both obtained by collecting all 130 emblems, and "Mission All Acomplished", obtained by completing all 60 missions. Even though there are less emblems, it's harder to collect all of them, as some of them are obtained in Adventure Fields (and there is an achievement for getting just those emblems). Plus, some missions can become insanely hard, requiring you to perform actions within Action Stages and not just in the Adventure Fields (and some missions can only be completed with a specific character).

** Lead God is difficult, but doable, especially with the addition of the Boss Rush mode in a recent patch. The achievement most worthy of 'That One' status as of this writing is ''Challenger,'' which requires completing the newly-added Challenge Mode. To explain, they took the already NintendoHard BulletHell roguelike and somehow ''made it'' '''''much''''' ''harder'' with the addition of room modifiers that range from being bombarded by missiles from offscreen, making certain enemies invincible until all the others are killed first, punishing missed shots by spawning in enemies, making the normally harmless debris and breakable pots shoot bullets at you when damaged, and a whole list of other hindrances. It's not so bad at first when you only have to deal with one per room, but - you guessed it - a room could be affected by ''up to three modifiers at once.'' [[OhCrap This includes boss rooms,]] and some challenges are ''tailor-made'' for bosses past the fourth chamber. The DiskOneFinalBoss also gets a string of new, faster attacks, '''all of which are guaranteed to deal a 5-second HPToOne effect''' regardless of your health because of another modifier, which also has a chance of showing up in sealed rooms on any floor. You might think that the game will allow you to test your luck skills for free, but the harsh truth is that you also have to pay ''6'' Hegemony credits every time you want to try again. For reference, you get about 2-3 on average from beating bosses[[note]]Luckily, after release of Advanced Dungeons and Dragons update it's possible to get up to ''10'' credits for killing bosses without taking damage.[[/note]], and 5 from beating the game.[[note]]After attempting 30 times, the game gives you a breather and reduces the price to one hegemony credit... but that's still 180 credits you have to fork over before the closest thing to a mercy mode kicks in, so it barely helps in the long run. What's worse, the game mockingly gives you Chaos Bullets after your 30th attempt, which you'd normaly get as a reward for completing challenge mode, somewhat rendering the whole mode useless, unless you are aiming for the achievement.[[/note]] All these things combined make it easy to see why this achievement is the 2nd least obtained by all players on Steam, [[http://steamcommunity.com/stats/311690/achievements/ sitting at a mere 1.7%]].

** "Mr. Popular" requires completing the game with Mason in the party. Mason constantly makes party members "disappear" through random events, mostly DespairEventHorizon events, which are more likely to occur when he shows up due to his inherent morale penalty, and [[NonstandardGameOver he will leave on his own terms if he's alone.]] He is also the only character in the game that ''cannot stay dead'' and ''respawns'' if he gets killed in action. A party member will "disappear" every time this happens as well. You either have to hope you recruit him close enough to the border or you hold out long enough to find more party members to replace the ones that "vanish."

** The game has a nasty habit of relying on the RuleOfThree for some very notorious achievements, from ''The Power Of The Heart''[[note]]Kill three enemies with Cupid's Heart Bomb. Heart Bomb is a highly telegraphed ability with a small blast radius that most enemies will easily scatter and escape from with very few ways of keeping enemies in position to hit more than one. Despite Cupid being added to the game in the closed beta, ''The Power Of The Heart'' has one of the smallest completion percentages at only 1.2%.[[/note]] and ''Detonate'' [[note]] Kill three targets with a single use of Zeus' Detonate while his passive is fully charged on them, a feat which requires careful and precise usage of his other abilities and keeping a SquishyWizard in relatively close proximity to the enemy team for an extended period of time. (Completion percentage: 1.4%)[[/note]] to ''Fury Of The Desert'' [[note]]Finish off 3 enemies with a single use of Anhur's ultimate, an ability which tends to require focusing down a heavily damaged target just to get ''one'' kill. (Completion percentage: 1.3%)[[/note]] and ''Got Nuts'' [[note]]Stun 3 enemies with one use of Ratatoskr's Acorn Blast, which requires perfect positioning of a ShortRangeShotgun like ability with an extremely narrow cone. (Completion percentage: 1.4%)[[/note]]
** Other achievements require repetition of tasks that, while relatively simple to complete a few times in a match, are nearly impossible to accomplish repeatedly within the requested time period, like ''Bird Bomb'' and ''Bringing Down The Law'' [[note]]Kill 15 enemies with Odin's shield + leap combo and Tyr's ultimate in a single match, respectively (1.2% and 1.1% completion percentage respectively)[[/note]], ''The Crowd Cheers!'' [[note]]Heal 12 times with Achilles's Radiant Glory. Radiant Glory heals Achilles for each enemy God or minion he hits with an ability, and his abilities have decent [=AOE=]s to take advantage of this, with one of his abilities being capable of being cast twice before going on cooldown. The problem is that Radiant Glory can only heal a maximum of 4 times per ability, and the aforementioned second cast can only be used if the ability hits a god, which heavily limits the amount of opportunities a player has to go for the achievement. Particularly notable is that while ''The Crowd Cheers'' is not the achievement with the lowest completion percentage, all of the achievements with lower completion percentages are from gods who were released considerably later than Achilles, with the earliest one added to the game nearly a year and a half later. (Completion percentage: 1.1%)[[/note]], or ''Shattered Mind''[[note]]Fully stack ''Sanity Break''. How ''Sanity Break'' works is if Cthulhu can hit an enemy god 4 times (with a 5 second time limit between each hit) with either abilities or his third auto attack in his chain, then land a blow with ''Sanity Break'' within 20 seconds, ''Sanity Break'' gains a stack. The problem is that fights that last long enough to let Cthulhu build up enough hits to stack his passive without dying or the enemy escaping just don't occur often enough to get the twenty stacks needed to get the achievement. (Completion percentage: 0.2%. Note that Danzaburou, who was the god released after Cthulhu, has 1.3% and 1.6% completion percentage for his achievements.)[[/note]]. Not helping is that at the time of writing this, Smite's meta encourages shorter matches, giving players even less time to get these achievements.

** The Doomsday Heist update for Enhanced versions of the game did manage the same thing but at this time has three awards that requires you to do so within the amount of players. This means you must complete with two, three and four players respectively.

* ''VideoGame/{{Overwatch}}'':
** The hero-specific achievements range from simple stuff, like attaching four Pulse Bombs for Tracer, to the ridiculous, like... well, read on. Most of the heroes have one achievement related to their Ultimate (for many Damage and some Tank characters, get four kills with one Ultimate use) and one related to another ability.[[note]] Most high-level players who mainly play a particular character will say that if you know how the character works, you can get both achievements without even consciously trying, but even then, there are exceptions. As for the four kill achievements, keep in mind that many of them amount to four "eliminations", not killing blows; as long as an enemy takes damage from the Ultimate and doesn't heal before reaching 0 HP, it counts toward the achievement.[[/note]]
*** The time between activation and detonation for D.Va's Self-Destruct can make "Game Over", which requires getting four kills with one Self-Destruct, a real pain, as most players with any game sense will know to avoid bunching up or congregating in open spaces if the enemy team has a D.Va, so unless they're all unconscious from an Earthshatter or stuck in a Graviton Surge, most of them will almost certainly get to cover in time.
*** Orisa's "Halt State" achievement requires that the player drag enemies into 1000 HP worth of damage with one use of Halt!; this effectively requires that Orisa drag at least four enemy characters, including one Tank (or three characters including two Tanks), into a high-damage Ultimate like RIP-Tire, Barrage, Dragonstrike, or Self-Destruct, but even then, getting the affected enemy players to take 1000 damage feels like a LuckBasedMission.
*** Following a re-work of Sigma's Gravitic Flux that makes it possible to cancel it by stunning or killing him mid-animation, the "Event Horizon" achievement, which entails getting three killing blows with one Gravitic Flux, requires a massive amount of luck and poor positioning by the enemy team to grab three players who are below half health and slam them against the ground without getting hit by a crowd control move.
*** Winston's "Mine Sweeper" requires clearing ten turrets or traps without dying. This almost requires either clearing most of an enemy Wrecking Ball's Minefield single-handedly (the mines count toward the total, but there are only fifteen of them, so even if you survive a follow-up Piledriver, you may be left with fewer than ten mines when the dust settles) or having a very persistent Junkrat, Symmetra, and/or Torbjorn on the other team who refuses to swap to a character who isn't as effectively countered by Winston.
*** Doomfist gets the dubious honor of having the perhaps most difficult achievement to date. "Cratered" requires the player to hit six enemies with a single use of his ultimate. Having the entire enemy team close together is a rarity by itself but his Meteor Strike is one of the slowest to execute, giving the enemy team plenty of time to scatter even before he has chosen his target area. Zarya's Graviton Surge is almost a requirement to achieve this and even that is far from a guarantee.
*** Genji is difficult enough to get the hang of without having to resort to meme-level spamming of "I need healing!" for most players, but then there's "Their Own Worst Enemy", which requires getting two killing blows with one Deflect. Your best bet is to hope that you have the millisecond-perfect timing and positioning to reflect an enemy Cassidy's Deadeye or an enemy Pharah's Barrage while the character in question is standing near several of their allies.
*** Junkrat's "Mine Like a Steel Trap" involves sending an enemy flying with a Concussion Mine so that they land in a Steel Trap. It requires either judicious arrangement of the two items in an enclosed passage and trying to bait an enemy player into walking into the traps, or hoping that when you set off a Concussion Mine, you just happen to blast the person standing near it in the right direction to land in the Steel Trap (if you're ''really'' quick and Steel Trap is off cooldown, you can throw it on their landing spot just before they hit the ground, but it requires very sharp reflexes).
*** Reaper's "Waste Not, Want Not" achievement requires the player to get three solo kills in ''one clip''. In other words, the player needs to kill three full-health enemies with only eight shots, which almost requires that all three enemies be 200 HP squishies (or, better yet, a 150 HP Tracer) and that every shot be a headshot, preferably at point blank range. Made even harder with the patch in May 2017, which made it so Reaper automatically reloads once he enters Wraith Form. Getting three solo kills with Death Blossom doesn't grant this achievement, although damaging the enemy and ''then'' using it will count, but finding three full health enemies and trapping them in Death Blossom after firing three shots is no easy task, either.
*** Soldier: 76's "Target Rich Environment" involves getting four kills with one Tactical Visor; even with the aid of a Nano Boost and/or Amplification Matrix, it can be immensely frustrating trying to get four killable enemies in view for long enough to reduce them all to zero health.
*** Sombra's "Power Outage" requires you to hack 6 enemies at once. In other words, the entire enemy team to be bunched up enough to hack them all at once, which is quite rare unless they are all sitting on the payload or the point (and most teams have the savvy not to do that if they know the enemy Sombra is close to an EMP). Her other achievement, "Hack the Planet", isn't much more forgiving, given that it requires you to hack 15 enemies without dying, which will probably mean regular translocating to safety in a way that shifts most of the burden of attacking or defending to your increasingly impatient teammates.
*** Symmetra's "Huge Success" requires her to teleport ''20'' players in a single game. While her 2018 rework made it possible to achieve this by putting down a portal and then having Sym herself teleport back and forth until the achievement pops,[[note]] Or, if you'd rather not go the LoopholeAbuse route, putting a teleporter pad close to spawn on a Control Map to make it easy for you and your teammates to get back to the point quickly.[[/note]] this was not always so; in its original design, each Teleporter could teleport up to 6 people (ignoring if it gets prematurely destroyed), so you were ''expected'' not only to have a team incompetent enough to constantly die in order to respawn and use it at all, but also to be perfectly able to deal enough damage in order to build up ''at least four Teleporters in a single game.'' The LoopholeAbuse of Sym herself using the portal twenty times was still possible, but still required that she build up to her Ultimate four times, and wasting those on teleporting yourself back and forth was a good way to enrage your teammates.
*** Widowmaker's "Smooth as Silk" requires you to get a scoped headshot while airborne; routine enough for mid-to-high-level Widowmakers (who might do this several times in a single game), not so much for low-level players. She automatically unscopes when she jumps or is flung into the air. That being said, all the game looks for is that Widowmaker is off the ground when she gets a headshot, which means that immediately jumping after getting a scoped headshot can get you the achievement. It's telling that, when a thread was created on the game's forum that asked "Which achievement did you get completely by accident?", the overwhelming answer was this one.
*** Baptiste's "Window of Opportunity" is almost completely beyond all but the highest level players, as it requires amplifying 2500 combined damage and healing with Amplification Matrix without dying. And that's ''amplified'' damage and healing, which means a total of 5000 damage and healing must pass through Amplification Matrix - and if the shots don't hit anything or the healing hits an ally at full HP, it counts for nothing. Fire Ultimates through the window? Most of them aren't damage boosted by it (notable exceptions include Tactical Visor). And while most Baptiste players can build up to an Amplification Matrix quickly, they still need to stay alive throughout the process.
*** Lúcio has perhaps the worst achievement in the entire game. "The Floor is Lava" requires him to get three killing blows while wall-running without dying. Thus, the situation requires Lúcio to be wall-running with a relatively weak enemy in his line-of-sight, and if a single teammate decides to help out and kill the enemy for you (as their job as damage-dealers entails), then good luck. At least you can push an opponent off the edge of the map and wall run as the kill is registered. If you're lucky enough to have a good Orisa on your team, she can also Halt! three players into the air so that Lúcio can knock them into a bottomless pit before they land, but it still requires razor sharp timing.
*** Mercy's "Huge Rez" achievement was changed from "rezzing four teammates at once" to "Rezzing six teammates without dying". Not impossible to achieve, but since Mercy has always been the [[ShootTheMedicFirst focal target since the start of the game]], her new skills force her to be in the line of fire much more often now.
*** Zenyatta's "Rapid Discord" achievement requires four people killed with Orb of Discord applied at the time of their death. The final blow can either be from Zenyatta or a teammate. Sounds easy enough, right? Well, it has to be done within ''six seconds'', meaning that if you aren't communicating with your teammates, getting this achievement almost requires the stars to align. Combine that with that fact the Zenyatta uses projectiles rather than hitscan, this means that people will likely fall just one kill short or 1 second short of getting this achievement.
** Most of the general achievements are pretty simple, from winning a match, to reaching level 50. However, a couple of achievements weren't popping correctly, with one requiring you to win a capture game, on defense, with no points lost. The achievement requires the capture bar to be at zero as the match ends, which can be very luck-based, depending on how good you are at defense, along with how well the enemy team is doing. Another, is getting 50 unlocks for a single hero, most of which, you'll get from RNG-based lootboxes.
** From ''Junkenstein's Revenge'':
*** "Not a Scratch" requires a NoDamageRun for the door, which is easy to screw up on simply by missing a Shock-Tire or letting a Zomnic slip past.
*** "Held the Door" requires a successful Legendary mode win. It borders on NintendoHard if the Zombardiers aren't disposed of quickly, or the Gunslinger and Alchemist don't team up to kill the bosses before they overwhelm the players.
*** "Survivor" needs the players to survive 4 bonus waves on Endless mode, on Expert difficulty. What makes this so hard is not only the Expert difficulty, but the fact that on Endless bonus waves, ''multiple'' copies of the same boss spawn soon after the first, regardless of whether or not the previous copy was killed. The second bonus wave, which has 3 of Junkenstein's Monsters spawn, can be considered NintendoHard, which is nothing to say about the 4th bonus wave, in which 2 Witches spawn.
** From ''Uprising'', the "Distinguished Service" achievement, which requires a successful win on Legendary difficulty. That's right, not Expert, ''[[HarderThanHard Legendary]]''. The smallest screw-up from any player on Legendary difficulty is almost guaranteed to end the game. To emphasize its difficulty, a team of pros were able to earn the achievement with ''only 1 second left on the clock''. At the end of the event, when the mode's metrics were posted on the Overwatch website, ''fewer than one percent of attempts on Legendary difficulty'' ended in victory.

* ''TabletopGame/SpaceHulk'' has "There is only war!", which requires the player to kill 40,000 enemies (an obvious riff on the [[TabletopGame/{{Warhammer40000}} source material]]). A complete playthrough of the main campaign can easily run well under 1,000 kills.

** ''VideoGame/ResidentEvil5'' has the "War Hero" achievement, which meant beating the game on Professional mode, the game's hardest difficulty setting. What made this mode a pain in the ass compared to ''Resident Evil 4'' is that in ''5''[='=]s Professional mode, one hit from anything sent Chris or Sheva into Dying status, with an extremely short time-frame to death. This was quite an obnoxious trophy to get because of that one-hit death FakeDifficulty that many fans of the game would rather play the Veteran mode for a harder, yet more fair challenge.

** "Pest Control" requires you to kill two [[EliteMook Dreadnoughts]] on Hazard level 3 and within 5 minutes. Not only are the Dreadnoughts complete damage sponges, it's rare to have their spawn points be close enough to each other. "Just Another Bug Hunt" is the same thing, but requires you to do it in ''thirty seconds''.

** ''VideoGame/ResidentEvil6'' has the "I Prefer Them Alive" achievement, where you must kill the Lepotica before it kills everyone in the church. The problem is that the Lepotica is a DamageSpongeBoss who can take some serious punishment, especially since the player is likely to be drained of their ammo at this point in the game.

** Lickety-Split requires a survivor player to cut a Smoker's tongue with a melee weapon. You only have a fraction of a second to react and swing your weapon at the Smoker's tongue before he grabs you. While the chainsaw makes the achievement less difficult, chainsaws are a rare find.

* ''VideoGame/Borderlands2'': While most of location-based challenges involving finding something including Cult of the Vault challenges can be a quite GuideDangIt there are examples of difficult challenges.

** "Jackpot!" requires you to match three triple eridiums or three Vault Symbols in the Lucky Shot slot machine in Sanctuary. This challenge requires extreme [[LuckBasedMission luck]] as most of times you get white and green weapons and a psycho faces that drop a bomb. If playing on higher difficulties, the cost of playing the slot machine is even higher making losing all of your money extremely easier.

** Slab UHF requires you to activate the radio tower located in the high of Slab Town in Thousand Cuts. It requires extreme precision and jumping in the black platfformings.

** "JEEEEENKINSSSSSS!!!" requires you to find and kill Jimmy Jenkins.[[note]]called Jimmy J3NKN5 in leetspeak[[/note]] He appears very rarely in Hyperion ammo crates found in Hyperion maps like Opportunity, Thousand Cuts and Wildlife Exploitation Preserve. However, he appears semi frequently in one of the four boxes located in the said latter area when the side mission "Doctor's Orders" is still active. You must kill 15 times to fully complete the challenge.

* Getting all three medals for "Nests Destroyed" in ''[[VideoGame/NintendoWars Advance Wars: Days of Ruin]]''. There's only one "Nest" in the game: Owl's Nest, Caulder's base. You destroy that in the final mission, "Sunrise". So to get these medals, you have to complete "Sunrise" ''ten times''. Did we forget to mention "Sunrise" is one of the most hated levels in the game?
* ''VideoGame/{{Civilization}} V'' has some achievements that are simply difficult, like winning a standard game or special scenario on the hardest difficulty, or grindfests to build 1000 Temples or construct 1000 roads over mutliple games. But some of the rarest achievements involve you going out of your way to make a ShoutOut, like [[Film/{{Casablanca}} "Here's Looking At You, Kid"]] (airlift a unit from Casablanca to Portugal's original capital), or [[Film/IndianaJonesAndTheLastCrusade "The Last Crusade"]] (use a Landship unit to capture a city with the Petra wonder). Probably the most obtuse is [[Film/RaidersOfTheLostArk "Raiders of the Lost Ark"]], which requires you, as America, to have an Archeologist unit extract an Artifact from within Egyptian borders while a German Archeologist is within two tiles of it - it's so staggeringly unlikely to happen over the course of a game that you almost have to set up a multiplayer match or use hotseat mode specifically to get it.
* ''VideoGame/DawnOfWar II'':

* ''VideoGame/{{Disgaea 3|Absence of Justice}}''

It can easily involve TheComputerIsACheatingBastard, LuckBasedMission, FakeLongevity, or FakeDifficulty, though in many cases, the difficulty is indeed legit. It often needs to be unlocked in ThatOneLevel, during ThatOneSidequest (of which it is a SubTrope), or while fighting ThatOneBoss. Often it's something absolutely no one would think to do. Maybe it's impossible or nearly so without [[BribingYourWayToVictory buying something with real money first]]. It might require you to clear the BrutalBonusLevel or defeat the nastiest BonusBoss. You may have to beat the game on HarderThanHard or under conditions that would otherwise be a SelfImposedChallenge. Worst case scenario, it's rendered [[UnintentionallyUnwinnable unattainable due to a glitch]], or requires an online connection to a server that [[TemporaryOnlineContent no longer exists]], never did exist, or no longer ever has enough people on it at once to satisfy the achievement. And then, of course, there's the "Get All Other Achievements" achievement, which naturally falls into this if one or more other achievements are hard to get.

* The deceptively-annoying and time-consuming ''Chaudown'' achievement in ''VideoGame/ScottPilgrimVSTheWorldTheGame''. The achievement is only unlocked after you use all four assist characters, three of whom have to be unlocked beforehand: You start with Knives by default, you unlock Mr. Chau after defeating him as a difficult and rare BonusBoss, which also unlocks Mrs. Chau, who randomly appears in place of Mr. Chau (though this can be cheated somewhat by the fact that she is Knives' default assist if you have her DLC), and you unlock [=NegaKnives=] with [=NegaScott=] (as she is his assist by default) after you complete the game with all four base characters. On top of all that, the achievement is glitched, so even if you do fulfill all the requirements you might not get it, leaving you no option other than to delete the save and start all over again.

** The entirety of Mac's Last Stand mode. Take on the entirety of the Title Defense roster. You only get three losses. Oh, and you can't reset or quit the matches. Oh, and your opponent is randomly determined each match. Oh, and you only get one shot at it per save file. Oh, and you have to go through it to unlock the BonusBoss. Oh and there's a chance that you can fail the challenge before said boss shows up, [[PermanentlyMissableContent meaning you won't be able to unlock them if you fail.]] Sound fun?

* ''VideoGame/WorldOfWarcraft'' gives us "What a Long Strange Trip it's Been" a meta achievement for completing all the achievements for the in game Holidays. Most of which involve at least one LuckBasedMission and are only available for a few weeks before being gone till the next year. And with no guarantee that you'll be [[{{Altitis}} playing the same class]] for the whole year, this one slips through a lot of people's fingers over and over again.

** Herald of the Titans requires that players defeat [[BonusBoss Algalon the Observer]] in Ulduar ''without any gear that is higher level than what is available in the '''10 man''' version of Ulduar''. Not only is this quite difficult on its own, but it's also impossible to outgear, and virtually impossible to find people who are willing to do it.

** Cataclysm also gives us an achievement so insanely difficult to obtain, guilds have been pulling their hair out over it for months: "I Can't Hear You Over the Sound of How Awesome I Am". The criteria? Beat [[BonusBoss Sinestra.]] On your first try. [[NoCasualtiesRun With not a single death at any point in the battle.]] If someone has earned this, props are very much deserved.

** "Ten-Sludge Monte": Kill a decasludge. Sludges are formed from liquids interacting with primordial soup, primarily in the Rainbow Wood: monosludges are already quite dangerous depending on the liquid that formed them, and to make a decasludge you have to provide ''nine'' other unique liquids to the sludge in question to make it become a decasludge. Each "level up" provides a new pseudopod with an effect based on the chemical given. For example, applying slime will add a pseudopod with a 100% disarm chance. This achievement only has 0.2% completion rate on Steam: by comparison, the achievement to kill a chrome pyramid (considered by many to be a [[BonusBoss Superboss]] [[BossInMookClothing in mook clothing]]) has a completion rate of 1.5%.

** In the FishingMinigame, every species of fish you can catch has a set of achievements for catching multiples of them, up to your 150th catch. This includes fishing enemies, strong Horrors, and even [[BonusBoss the Lake Lords]]. Some normal fish species like the Rinde Sunfish are also exceedingly rare, which makes it very tedious to progress its achievement set. Catching 150 of these rare or tough fish is more or less a BraggingRightsReward.

*** The trophy "Searcher" in the same game requires finding all of Ansem's Report pages. It was easier in the original game, but this time, there are several new pages, and those are only earned by defeating several of the hardest {{Bonus Boss}}es. Specifically, [[ContestWinnerCameo Kurt Zisa]], [[EarlyBirdCameo Unknown]], and [[VideoGame/FinalFantasyVII Sephiroth]].

*** There’s also the Level Master achievements for getting Sora and Riku to Level 99 in each of their respective campaigns. Getting these achievements are also tedious, as most players will get to the end of the game at around Level 30-40, meaning that getting to Level 99 requires tons of grinding rooms repeatedly to get there, especially since you only fight bosses once and there’s not a single BonusBoss in sight. And while Sora can gain powerful sleights like Mega Flare and Trinity Limit to tear through enemies faster, Riku has the same moveset throughout his entire campaign, and you can only go so fast with the Impulse sleights.

*** Played straight with the achievements "Lingering Will", which requires beating the incredibly difficult BonusBoss of the same name; "To Rule Them All", which requires defeating all of the slightly less difficult Organization XIII Replica Data bosses, which requires getting through a BrutalBonusLevel to even access them; and "Mushroom Master", which requires completing the 13 'Mushroom XIII' minigames, some of which can be [[ThatOneSidequest hair-pullingly difficult]].

** There are a series of "Annihilator" achievements for killing 100 of a certain enemy species. The nastiest ones are Yggralith Annihilator and Telethia Annihilator. The only consistently-spawning Telethia and Yggralith are the game's strongest {{Bonus Boss}}es. Good luck with that.

* ''VideoGame/ArcanaHeart 3'''s Score Attack is no joke either. But the real hell is its Final SNKBoss. Parace L'Sia, a boss so famously hard that not only does it put each of the bosses of VideoGame/BlazBlueContinuumShift's Score Attack mode to shame, but it might even go on to put Creator/SNK's Entire Boss Library to shame. Unlike Blazblue, you do have unlimited continues for the score attack mode. Thing is, you will NEED THEM in order to get past the last boss.

* ''VideoGame/ArcanaHeart 3'''s Score Attack is no joke either. But the real hell is its Final SNKBoss. Parace L'Sia, a boss so famously hard that not only does it put each of the bosses of VideoGame/BlazBlueContinuumShift's Score Attack mode to shame, but it might even go on to put Creator/SNKPlaymore's Entire Boss Library to shame. Unlike Blazblue, you do have unlimited continues for the score attack mode. Thing is, you will NEED THEM in order to get past the last boss.

** ''[[VideoGame/DarkSoulsII Dark Souls II: Scholar of the First Sin]]'' and its spell-related achievements. You can get every other achievement in the game in one playthrough of the base game if you use a guide, but these four achievements require you to grind ranks in the various covenants; play through all three DLC quests, which aren't required for any other achievement; play through NewGamePlus to get the four alternate Lord souls to trade for spells; and then play through ''NG++'' until you reach Chancellor Welleger, who sells the last two spells you'll need.