''Ketsui: Kizuna Jigoku Tachi'' is a VerticalScrollingShooter by Creator/{{Cave}} released for arcades in 2003, and then later ported to the UsefulNotes/NintendoDS and UsefulNotes/XBox360 [[NoExportForYou in Japan]] with a UsefulNotes/PlayStation3 port announced. Its title roughly translates to "Decisive Determination: Cutting the Bonds of Hell."\\
In the year 2054, chaos grips the world as global climate shift has melted the ice caps, raised sea levels, and intensified natural disasters. With many nations consumed by the destruction, the sudden end of means to acquire all resources force the countries that remained intact, into WorldWarIII. Any attempt to cease hostilities by the United Nations is thwarted by an endless supply of technologically advanced weapons sold to both sides of every possible conflict. Investigations by UN are all traced to EVAC Industries, a weapon manufacturer and arms dealer that has been reaping tremendously high profits from the constant warfare. EVAC has even been known to directly intervene to prevent any progress towards peace. The company's profits are so massive, it has built its own cities, shipyards, defensive emplacements and even a private airport, in addition to assemble its own private army of well-equipped mercenaries. All attempts to negotiate with the board of directors have failed.\\
Unable to perform any official actions, UN sets up a strike team of four pilots, each pair given one of two advanced helicopters which were built according to stolen prototype blueprints and [[DressingAsTheEnemy bear EVAC insignias and callsigns]]. Their mission is to stimulate a rebellion within EVAC's forces and destroy the company's headquarters where their most powerful weapons are being made. The mission cannot be traced back to UN, regardless of the outcome. Even if the mission is a success, both the helicopters '''and the pilots''' must be destroyed. To compensate for their sacrifice however, UN will fulfill their dying wishes.

!!Tropes used in ''Ketsui''
* AttackDrone
* BossGame: ''Ketsui: DEATH Label'' for the UsefulNotes/NintendoDS.
* BossWarningSiren: "Approach your target and attack! Your mission starts now! Are you ready?"
* BrutalBonusLevel: "Extra Course" in ''Ketsui: DEATH LABEL'' is a modified version of Stage 5 from the original game. "Just" a [[NintendoHard lot]], ''[[HarderThanHard lot]]'', '''[[SerialEscalation LOT HARDER!]]''' And if by any chance you manage to reach the end of the stage, the game pits you against a modified version of [[TrueFinalBoss Evaccania DOOM]]. It's basically the already [[NintendoHard hard]] [[TrueFinalBoss True Final Boss Fight]] from the original game with its difficulty cranked UpToEleven.
* BulletHell
** Taken to its logical extreme with "DOOM Mode" in ''Ketsui DEATH LABEL''. The mode consists of you fighting against [[TrueFinalBoss Evaccania DOOM]]. FIVE times in a row, and the bullet density increases ten-fold with each consecutive fight.
* ButterflyOfDeathAndRebirth: DOOM definitely represents the death part.
* {{Combos}}: See ShortRangeLongRangeWeapon below.
* {{Crossover}}: ''[[VideoGame/DonPachi DoDonPachi DaiFukkatsu BLACK Label Arrange]]'' is the closest thing there is to a sequel to this game, complete with DOOM as the final boss.
* TheDeterminator: "Ketsui" roughly translates to "determination." This is further emphasized by the fact that, unlike most games in the genre, the entire game is a single continuous attack on the enemy base with no breaks between the backgrounds, meaning that the pilots and gunners ''never'' rest until the end.
* DirectContinuousLevels: Once the ScoreScreen ends, the background transitions into the next level.
* DoomyDoomsOfDoom: Evaccania '''DOOM'''
* DressingAsTheEnemy: The UN can't let EVAC know that it's them who's conducting the attack, so the four pilots instead fly in EVAC prototypes complete with EVAC callsigns, pretending to be rebels within the company's military.
* DummiedOut: The announcer has a few clips that are never spoken in-game, such as as "[[VideoGame/DonPachi Just a couple]] [[ShoutOut more shots!]]", [[VideoGame/SinAndPunishment "Please continue!"]], and "GameOver."
* EveryTenThousandPoints: By default, you get an extra life at 20 million points and again at 45 million points. There's two more ways to get one-ups; see OneUp below.
* {{Expy}}: DOOM is essentially [[VideoGame/DonPachi Hibachi]] except less [[BeeAfraid bee-themed]] and more [[ButterflyOfDeathAndRebirth butterfly-themed]]. Even the beginning of its theme sounds similar; compare [[http://www.youtube.com/watch?v=rUzlG1ZkG6g Hibachi's theme]] with [[http://www.youtube.com/watch?v=GNK7j-j_c68 DOOM's]].
** In the X-box 360 version of ''[[VideoGame/DonPachi DoDonPachi DaiFukkatsu BLACK Label]]'', Hibachi is replaced with DOOM, thus completing the circle.
* FalseFlagOperation: The whole point of [[DressingAsTheEnemy disguising the pilots as employees of EVAC]] is to make the pilots' attack look like a rebellion within the company, keeping the heat off of the UN.
* GameMod:
** ''[[http://www.youtube.com/watch?v=gJunoyVLChc Ketsui Arrange]]'', which is ''Ketsui'' with elements of ''[[VideoGame/DonPachi DoDonPachi DaiFukkatsu BLACK LABEL]]''[='=]s adjustable rank meter and ''VideoGame/BattleGaregga''[='=]s [[AttackDrone option]] formations.
** The same developer also made ''Ketsui Mr. Stoic Ver.'', which [[{{Minimalism}} strips out all scoring elements other than points for killing enemies and end-of-stage bomb and life bonuses]].
* GenderBlenderName: Alice Blackburn (pictured in the ''DEATH Label'' cover above) is ''male.''
* HardModeFiller:
** Complete all five stages with less than 6 bombs used and lives lost to unlock the Tsuujou/Omote loop, in which enemies have more firepower and release suicide bullets and the scoring system dramatically changes (for instance, no more chips larger than 1).
** Complete all five stages with no bombs used or lives lost ''and'' a score of at least 120 million points to unlock the Ura loop, which has even more suicide bullets. Should you make it through this, you get to fight the TrueFinalBoss, Evaccania DOOM.
* HeroicSacrifice: The final part of the mission involves the pilots' lives being sacrificed in order to keep the United Nations' involvement a secret.
* KaizoTrap: The midboss in stage 2-4 fires exactly '''one''' suicide bullet after you destroyed it.
* MeaningfulName:The sub-boss of level 2 is a pair of tanks connected together are named "Gem & Ini".
* MegaCorp: The very being of EVAC Industries
* MercyMode: True to Death Label. Everytime you fail a course, the game permanently increases the number of lives you will start with in it.
* NGOSuperpower: EVAC Industry has the military capacity to force World War III to keep going, and has even managed to own large swaths of land in the process.
* NintendoHard: It's a BulletHell shooter by Cave! What do you expect?
** It is known for its notorious difficulty since experts played it back in 2002.
** And what's even funnier? CAVE wanted to make this game more ''approachable'' for newcomers after [=DaiOuJou=] couldn't possibly be realized.
*** Cave later said that they wanted to make the scoring system more approachable, and the fact that the difficulty was just as hard as [=DaiOuJou=] was fully intentional.
* OneUp: Destroying the main part of Stage 3's midboss ''without bombing'' nets you a 1-up. You can get a second one on Stage 5 by destroying the production model versions of the player ships, again without bombing. Unlike the point-based extra lives, these can be repeated in the second loop, allowing you to have up to eight lives in reserve.
* RatedMForManly: This is CAVE's last game that uses a purely military aesthetic, and on top of that all named characters are male.
* ScoreMultiplier: You have two, increased by getting chips:
** An enemy multiplier that's capped at 999 and is used and decreased when destroying enemies with the lock-on shot.
** A boss multiplier that builds up throughout the stage and is applied to destroying the boss's phases with the lock-on shot, only decreasing if you get killed or once the boss battle begins but at a much slower and more gradual rate.
* SdrawkcabName: EVAC is CAVE spelled backwards.
* ShortRangeLongRangeWeapon: How you score points (specifically, build up your multiplier). You start by killing an enemy at close range with your standard shot, which sets what multiplier chips you'll be getting from enemies with your lock-on shot. Closer range yields larger chips (up to size 5). You then use your lock-on shot to rack up tons of those chips before your chip timer runs out, at which chips that you release drop back to size 1.
* SmartBomb: Your bombs are either shot forward or at a targeted enemy. It will only damage an enemy if it is caught in the explosion and will not clear the screen of bullets. Your ship, however, gets a shield of invincibility that lasts for a little over 4 seconds.
** ''Ketsui DEATH LABEL'' provides the "Auto-Bomb" option. [[SarcasmMode In the unlikely case]] you were hit, you won't die but your whole bomb stock will be depleted.
* SuicideAttack: Before the start of the game, we're led to know that UN gave the 4 pilots a mission to tear EVAC Industries apart, with the eventual cost of their lives.[[spoiler: But in the true ending after destroying DOOM, all the pilots resume their lives, carrying out different missions while still posing as EVAC mercenaries.]]
* SuperPrototype: The "AH-Y72 Tiger Schwert" and "FH-X4 Panzer Jäger". The player encounters inferior production models of their helicopters on Level 5.
* TrueFinalBoss -- DOOM
* TwentyMinutesIntoTheFuture
* UnexpectedGameplayChange: Loop 2 dramatically changes the scoring mechanics. In the Omote Loop (the standard second loop), all chips higher than 1 are now gone, and you don't get chips if you kill enemies close enough to seal their suicide bullets. In the Ura Loop (the special second loop), on the other hand, you get chips for sealing suicide bullets, but you still can only get '1' chips. In short, it's similar to the arrange modes of various CAVE ports, but mandatory if you unlock them.
* WarForFunAndProfit: EVAC's business model.
''Approach your target and attack! Your mission starts now! [[http://www.youtube.com/watch?v=Ro5i_h9_G8g Are you ready?]]''