Ultimate Doom achievements

Reach the end of 'DOOM II'.

Get 20 kills using the berserk powerup in a single level.

Finish off a Cyberdemon with the Pistol.

Finish a level with 200% armor and 200% health.

Gib three or more enemies with a single rocket explosion.

Kill 5 enemies in 5 seconds with the Plasma Rifle.

Kill 4 enemies in 1 shot with the Super Shotgun.

Reach the end of 'DOOM'.

Find a secret level.

Shoot 200 bullets consecutively with the Chaingun.

Complete a level on Nightmare difficulty.

Kill only a single enemy with a BFG9000 blast.