The Slaughterhouse
The basic mechanics of the Story Mode version of The Slaughterhouse. There is no Elite version 
Psychoassailant: Resistance needs to be purged; itâs a massive shield. The Tesla coils start at the far side and wake up the cleanup bots. In order to position him, he needs to be pushed and line of sighted behind consoles.
NKL-107: Its persistent AoE, âElectromagnetic Fieldâ, wakes up the cleanup bots in the room. Alternating Current canât be interrupted, NKL has to be positioned so it places them in convenient spots. Resistance must be purged; its other shield, Mega Charging Sphere, on the other hand, needs to be destroyed by damage, else it will become âFully Chargedâ and unleash 10,000 Volts on the tank, stunning them and doing massive damage. NKL-107 also Cleaves, hitting everything in front of it in an arc.
When NKL is damaged about 1/4, it moves to the center of the pylons and casts Burning Plasma, which fills the room with dangerous electricity and wakes up some cleanup bots. Hiding in the closet or behind the freight cars and killing cleanup bots then will both protect you and keep those bots from waking up again. After two more Burning Plasma phases, NKL will âMalfunctionâ and wander around the room, randomly waking up cleanup bots and otherwise waiting for people to kill it.
Obyeckt 279: Resistance needs to be purged; Electro Blast should be interrupted (it has a longish cast and doesnât occur frequently), since it chains and targets random players at times. Every time the announcer speaks, one, then two, then three (and so on) vat-grown suppressors come out and attack; they need to be rounded up. If Obyecky isnât dead by the time the Tesla coils start up where youâre fighting him, move around the room if needed, the coils leave ample time to do this.
Cybulski: He normally casts Metalstorm as an uninterruptible attack. Occasionally casts Scanner, which is an AoE that can be interrupted. When the announcer speaks, heâll go into the center of the room and cast Deepening Psychosis, which means people need to chase at least one of the opportunist vampires hiding around the room into the open so Cybulski will kill it instead. If you run out of vampires before Cybulski dies, be prepared to sacrifice someone else.
Vampiric Plunderer: He starts out rather unassuming; standing there casting an easily avoided Close Encounters, but beware: the cryo remnant adds mean business when they get close enough to the boss for him to Jumpstart them. Eventually, the room will fill up with dangerous freezing fluid, leaving a quite narrow path which the now powered up Vampiric Plunderer is going to Dash through, use Close Encounters, and try to fill up with Cryobiotic Bombsâsmall persistent AoE centered on the tank which, if stood in, do a lot of DoT damage. Each Cryopbiotic Bomb lasts roughly as long as it takes him to cast three of them, so if youâre careful, you could line up two along the very edge of the room, and by the time heâs casting a third one, youâd have room to move to the now thawing other side. Because this boss is ranged, itâs a bit hard to keep him in melee at this point while tanking. Good thing we now have a ranged tank weaponâŠ!
Alexei Chetyre: In his first phase, he performs two main attacks, neither of which can be interruptedâIce Shot, a red AoE under everyoneâs feet where they need to move so they donât overlap, and Ice Imprison, which turns the tank into a Popsicle. Wait until it is fully formed to destroy it, as otherwise it causes a bug where the tank remains stunned for 15 seconds (hopefully this gets fixed soon!). Two or three times Alexei Chetyre will stand on the platform, summon cryo remnants, and spray the room down with an ice hose. Just kill the adds and donât stand in the ice, else you, too, will be a Popsicle. Eventually, the floor breaks, dropping you into Phase 2.
Alexei Chetyre Phase 2: This starts out with Alexei Dva on the other side of the room. He casts New Flesh which summons adds, and Flesh Crawls, a cone AoE. Both can be interrupted. After hes been knocked out, cross to the side you fell down into, where Alexei Chetyre is ready for a rematch.
Alexei Chetyre has two main uninterruptible casts-- Toxic Ooze Release, a cone AoE that puts nasty stuff on the ground, and Splatterhouse, which will encase the tank in a flesh clump which must be destroyed. Dodging through Alexei during this cast will force him to turn around and forget what heâs doing, though. After enough damage is done to Alexei Chetyre, Alexei Dva wakes up and splits into twoâone way back in the back busily making adds, and another attached to Alexei Chetyre protecting him. Alexei Dva has the same moveset as before, and his protection isnât great; Alexei Chetyre can be killed without killing Alexei Dva, at least in Story Mode.