Finish a level with 200% armor and 200% health.
Kill 2 enemies with a single barrel explosion.
Get 20 kills using the berserk powerup in a single level.
Kill only a single enemy with a BFG9000 blast.
Reach the end of 'DOOM'.
Reach the end of 'DOOM II'.
Reach the end of 'TNT: Evilution'.
Reach the end of 'Master Levels for DOOM II'.
Reach the end of 'Legacy of Rust'.
Reach the end of 'No Rest for the Living'.
Reach the end of 'The Plutonia Experiment'.
Reach the end of 'Sigil'.
Shoot 200 bullets consecutively with the Chaingun.
Get 100 Chainsaw kills.
Crush a corpse in a door.
Cause an enemy to kill another enemy.
Get 25 kills with your Fists in a single level.
Immolate a total of 30 arachnoid enemies with the Incinerator.
Finish a level with 100% items picked up.
Complete any monster-filled level with 100% kills, items, and secrets.
Kill all monsters in any monster-filled level on 'Hurt me plenty' or higher.
Kill one of every enemy.
Complete a level on Nightmare difficulty.
Complete 8 different levels sequentially under par time without dying on Ultra-Violence or higher.
Finish off a Cyberdemon with the Pistol.
Kill 5 enemies in 5 seconds with the Plasma Rifle.
Gib three or more enemies with a single rocket explosion.
Find a secret area.
Find a secret level.
Get 3 multi-kills with the Shotgun.
Obliterate 50 enemies with a single shot of the Calamity Blade.
Kill 4 enemies in 1 shot with the Super Shotgun.
Complete any monster-filled level with 100% kills without taking any damage on Ultra-Violence or higher.
Complete any monster-filled level with 100% kills without getting hurt on Ultra-Violence or higher.
