TIME
HP:7500
Weakness:Any firearm
He will shoot grenades at tiles marked with a red target. You have to avoid those targets. If you don't defeat Time under 2 minutes, the gas will be released and it will kill you.

YATES
HP:550
Weakness:HE Grenades
He will manipulate your surroundings to kill you. You have to step on the green targets to dodge his attacks. You cannot use firearms to kill him as he is protected by a shield. Only way to defeat him is by throwing HE grenades around the shield that spawn in intervals of 15 seconds. He will slow you down half-way, lowering your chances of survival.

CORY
HP:100000
Weakness:Super Secret Anti-Meme Laser
He is almost immortal, you have to obtain the Super Secret Anti-Meme Laser if you wish to defeat him. He has 4 Phases of attacks.

Phase 1 (HP >75%): He will launch gas grenades at you and spawn vortigaunts. Move away from the red targets to avoid gas.

Phase 2 (HP 50-75%): Previous attacks will be terminated and his minions will arrive to shoot lasers at you. Best way to dodge the lasers is by staying in the bottom-left corner and the top-right corner. Avoid the tiles marked red to dodge lasers.

Phase 3(HP 25-50%): Previous attacks will be terminated. He will shoot plasma projectiles at you at a very fast rate. Avoid the red targets to dodge them.

Phase 4(HP <25%): All previous attacks will start happening again and he will also shield himself at times. To disable the shield you have to press 4 buttons (2 for CTs and 2 for Ts) on both sides of the map.