History GameBreaker / MetalGear

* The Carl Gustav Fulton Launcher allows you to fulton soldiers from long range. It isn't just restricted to a single soldier, either. Groups of soldiers can be cleared off the map with this weapon. Many players find it to be an essential tool when S-ranking vehicle boss battles and at least one extra op can be cleared in seconds using it.

* The bandana. As per the franchise's tradition, it provides unlimited ammo. Unlike the stealth camo, it does not affect your rating. Very useful for boss battles, as it eliminates the need to keep requesting supply drops.

* ''VideoGame/MetalGearSolid: The Twin Snakes'' was the updated version of the original MGS for the UsefulNotes/NintendoGameCube, graphically enhancing the maps and adding the new game-play additions from MGS 2. The problem is that it has carried the narrow layout stages and limited number of enemies from the limitations of the UsefulNotes/PlayStation original. The new game-play features like first person mode allow you to pick off from a distance guards and security cameras once you have the silenced pistol which has no range. Making the game a walkover.

* ''VideoGame/MetalGearSolid4GunsOfThePatriots'' has the M14 EBR. In gameplay terms, it's essentially a cross between an assault rifle and a sniper rifle, with none of the drawbacks of either (it can be switched between an accurate semi-auto mode and a fast full-auto mode at will). It's also upgradeable (the only sniper rifle in the game that is, in fact), almost eliminating any disadvantages of using it at close range, in third-person mode, or when you don't want to alert enemies. You can get this weapon very early in the game, before any setpiece battles; it's cheap enough you can often immediately buy one after Drebin's introduction with the points you retroactively gain for weapons picked up earlier on, or grab one and unlock it for even cheaper from the PMC snipers in the very next map area. Ammo is also incredibly easy to get for it, as about 95% of the PMC soldiers use weapons that share ammo with it.

* The Infinity Wigs from ''Sons of Liberty'' make a return as accessories for Raiden, albeit with different effects. Wig A (brown) grants infinite Sub-Weapons so long as it is equipped, making it easy to spam EMP Grenades and 3D Photo Frames. Wig B (blue/aqua) makes Blade Mode and Ripper Mode infinite (but Ripper Mode can no longer be used at the same time as Blade Mode). The Blade Mode Wig (blonde) has the same effect as a maximized Fox Blade, but only takes effect when Blade Mode is active. Using any of these has NO EFFECT on your battle ranking, but all of these have to [[EarnYourFun be earned]] by collecting enough Left Arms, Data Storages, and in the case of the Blade Mode Wig, finishing the game on Hard Mode.

* The [[GatlingGood Gatling gun]]. [[MoreDakka It having an enormous rate of fire]], high damage per shot and is the only weapon that doesn't require reloading. Combined with the bandanna, [[BottomlessMagazines it can keep firing indefinitely]].

* The Parasite Suit. Despite the item description, it only restricts your rank to A or lower if you use the Stealth Parasite. Using it with the two other Parasite variations does not induce any restrictions. The Mist Parasite in particular makes S-ranks incredibly easy -- not only does it last longer then the Stealth Parasite of equal rank, but it is very easy to bypass the drawback of reduced vision it has by using D-Dog as a buddy and his passive marking to avoid getting too close to enemies.

* The Rocket Arm is a remote-controlled OneHitKO projectile that is undetectable by enemies, and functions without any ammo limit other than auto-regenerating energy. The rocket arm can even knock out Heavy Infantry, who normally require [=CQC=] to stun because they're immune to tranquilizer darts.

** It's very easy to farm GMP by replaying Quiet's boss battle, "Cloaked in Silence" (Mission 11), and doing the following. Mark her position. Order a supply drop on her. Repeat the process. In total, it takes roughly five minutes, and will net you at least 150,000 GMP along with an S-Rank. This makes the early game (especially saving GMP for upgrades) exceptionally easy.

* Downplayed with a number of items, including the Chicken Hat, the Stealth Camo Prototype and the [[spoiler:Parasite Suit]]. If you use them on a mission you won't be able to get an S-Rank, though since side-ops aren't graded, you can use as many of them as you want.
** Actually the [[spoiler:Parasite Suit]] plays it straight since, despite the item description, it will only restrict your rank if you use the [[spoiler:Stealth Parasite]], using it with other two other [[spoiler:Parasite]] variations you get do not induce any restrictions, and the [[spoiler:Mist Parasite]] in particular makes S-ranks incredibly easy, as it not only does it last longer then [[spoiler:Stealth Parasite]] of equal rank but it is very easy to bypass the drawback of reduced vision it has by using D-Dog as a buddy and use the passive marking to avoid getting too close to enemies and find objectives and having easier missions get the resources necessary to use it.

* The Carl Gustav Fulton Launcher allows you to fulton soldiers from long range. It isn't just restricted to a single soldier either. Groups of soldiers can be cleared off the map with this weapon. Many players find it to be an essential tool when S-ranking vehicle boss battles and at least one extra op can be cleared in seconds using it.

* The [[GatlingGood Gatling gun]]. [[MoreDakka Insane rate of fire]], high damage per shot and is the only weapon that doesn't have to be reloaded. Combined with the bandana [[BottomlessMagazines it can keep firing indefinitely]].
* The [=M47=] is a guided surface-to-surface rocket launcher with the highest damage per shot of any rockey launcher in the game. It only comes with three shots, but those are usually enough to inflict heavy damage on whatever you're shooting at.

* '''Quiet'''. [[MagikarpPower She might seem useless at first]], but spend some time with her and she can easily become the most broken of your potentially-overpowered companions.

* ''VideoGame/MetalGearSolid: The Twin Snakes'' was the updated version of the original MGS for the UsefulNotes/NintendoGameCube, graphically enhancing the maps and adding the new game-play additions from MGS 2. The problem is that it has carried the narrow layout stages and limited number of enemies from the limitations of the PlayStation original. The new game-play features like first person mode allow you to pick off from a distance guards and security cameras once you have the silenced pistol which has no range. Making the game a walkover.

** Adding suppressors to almost any weapon that doesn't come with it for free? Check. Making a long-range assault rifle with good fire rate, suppressor and an underbarrel grenade launcher? Check. Using the UN-ARC's magazine on a semi-auto sniper rifle to hardly run out of ammo? Check.

* ''VideoGame/MetalGearSolid: The Twin Snakes'' was the updated version of the original MGS for the UsefulNotes/NintendoGameCube, graphically enhancing the maps and adding the new game-play additions from MGS 2. The problem is that it has carried the narrow layout stages and limited number of enemies from the limitations of the PlayStation original. The new game-play features like first person mode allow you to pick off from a distance guards and security cameras once you have the silence pistol which has no range. Making the game a walkover.

* The Infinity Wigs from ''Sons of Liberty'' make a return as accessories for Raiden, albeit with different effects. Wig A (brown) grants infinite Sub-Weapons so long as it is equipped, making it easy to spam EMP Grenades and 3D Photo Frames. Wig B (blue/aqua) makes Blade Mode and Ripper Mode infinite (but Ripper Mode can no longer be used at the same time as Blade Mode). The Blade Mode Wig (blonde) has the same effect as a maximized Fox Blade, but only takes effect when Blade Mode is active. Using any of these has NO EFFECT on your battle ranking, but all of these have to [[Earn Your Fun be earned]] by collecting enough Left Arms, Data Storages, and in the case of the Blade Mode Wig, finishing the game on Hard Mode.

** There is a massive bug in the PC version that allows the player to equip ''any'' part to any weapon, regardless of whether it's a handgun or a rocket launcher. By going into the Weapon Customization screen and left-clicking to select a slot, this will allow you to place any part on any weapon. This includes parts that shouldn't be compatible with your chosen weapon (like using an SMG clip on a handgun). This allows players to break the game completely - want an SMG with rocket launcher parts? You can have it.

** Once Quiet gets the Sinful Butterfly rifle, she can one-shit kill guys wearing helmets, and she can bring down helicopter gunships with two shots. She can even kill tanks and armored personnel carriers, although this requires several shots during which time the vehicle is very likely to start shooting back at her.

* The Rocket Arm is a remote-controlled OneHitKO projectile that is undetectable by enemies, and functions without any ammo limit other than auto-regenerating energy.

* The Burkov TP, a '''semi-automatic [[StunGun tranquilizer pistol]]''' in a series that's previously given tranqs the handicap of the slide locking after every shot. Somewhat nullified by it being a late-game upgrade as well having pretty bad iron sights.

* ''VideoGame/MetalGearSolid: The Twin Snakes'' was the updated version of the original MGS for the GameCube, graphically enhancing the maps and adding the new game-play additions from MGS 2. The problem is that it has carried the narrow layout stages and limited number of enemies from the limitations of the PlayStation original. The new game-play features like first person mode allow you to pick off from a distance guards and security cameras once you have the silence pistol which has no range. Making the game a walkover.

* The Burkov TP, a '''semi-automatic [[StunGun tranquilizer pistol]]''' in a series that's previously given tranqs the handicap of the slide locking after every shot. Somewhat nullified by it being a late-game upgrade.

* '''Quiet''' exemplifies broken game mechanics, in a game full of potentially-overpowered companions.

* The weapon customization system can be a game-breaking tool, provided you have the proper weapons to play with. Adding suppressors to almost any weapon that doesn't come with it for free? Check. Making a long-range assault rifle with good fire rate, suppressor and an underbarrel grenade launcher? Check. Using the UN-ARC's magazine on a semi-auto sniper rifle to hardly run out of ammo? Check.

** Quiet makes most (if not all) side ops involving soldiers incredibly easy. Just park her on a hilltop outside of the enemy base, have her shoot somebody with an unsilenced sniper rifle, sneak into the mission area and take care ob the objective while all of the enemies are busy trying to take out Quiet.
* The Cargo +2 upgrade for the Fulton device makes just about any sneaking mission a breeze. Look for a container, mark it on your map, complete your objective, sprint back to the cargo, fulton out with you on top of it by being on top of the container and fultoning it, then holding the interact button. This makes some of the nastier Chapter 2 missions (like Traitors Caravan EXTREME) incredibly easy.

* Downplayed with a number of items, including the Chicken Hat, the Stealth Camo Prototype and the [[spoiler:Parasite Suit]]. If you use them on a mission you won't be able to get an S-Rank, though since side-ops arn't graded feel free to use as many of them as you want.

** With enough of a Buddy bond (50% or more), you will unlock the "Cover Me" command, which allows her to fire on all targets until told otherwise. With the Sinful Butterfly tranquilizer sniper rifle and this command, Quiet will clear out entire swaths of the map without any further prompt. Most players who use her report giving her the command, going off to do a side objective in a mission and running across a mission area where ''everyone'' has been knocked out, setting them up for easy Fulton extraction. This is one of the most efficient ways to farm high-level recruits for Diamond Dogs. The only downside is that she can't snipe through heavy armor, but that just means that she'll end up shooting them in the arms/legs and tranq'ing them, just somewhat slower.

** Quiet makes Prisoner Rescue side ops incredibly easy. Just park her on a hilltop outside of the enemy base, have her shoot somebody with an unsilenced sniper rifle, sneak into the base, and extract the prisoner while all of the enemies are busy trying to take out Quiet.