Reach the end of 'The Plutonia Experiment'.

Reach the end of 'Master Levels for DOOM II'.

Complete any monster-filled level with 100% kills without getting hurt on Ultra-Violence or higher.

Reach the end of 'DOOM II'.

Get 25 kills with your Fists in a single level.

Get 3 multi-kills with the Shotgun.

Gib three or more enemies with a single rocket explosion.

Crush a corpse in a door.

Kill 5 enemies in 5 seconds with the Plasma Rifle.

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

Complete 8 different levels sequentially under par time without dying on Ultra-Violence or higher.

Kill 2 enemies with a single barrel explosion.