DOOM + DOOM II
TheTwoFistedWonderBrain's Progress
Guns Are For Wusses
Get 25 kills with your Fists in a single level.
Until It Is Done
Get 100 Chainsaw kills.
Shoot It Until It Dies
Finish off a Cyberdemon with the Pistol.
Groovy
Get 3 multi-kills with the Shotgun.
Skeet Shooting
Kill 4 enemies in 1 shot with the Super Shotgun.
Heavenly Joy
Shoot 200 bullets consecutively with the Chaingun.
Bowling for Gibs
Gib three or more enemies with a single rocket explosion.
Cookin' With Plasma
Kill 5 enemies in 5 seconds with the Plasma Rifle.
Overkill
Kill only a single enemy with a BFG9000 blast.
Timing Is Everything
Kill 2 enemies with a single barrel explosion.
Doormat
Crush a corpse in a door.
Overprepared
Finish a level with 200% armor and 200% health.
Indiscriminate Headhunter
Kill one of every enemy.
Not So Friendly Fire
Cause an enemy to kill another enemy.
More Like a Dream
Complete a level on Nightmare difficulty.
Hoarder
Finish a level with 100% items picked up.
The Only Thing They Fear Is You
Complete any monster-filled level with 100% kills without taking any damage on Ultra-Violence or higher.
An Important Looking Door
Find a secret area.
Alternate Dimension
Find a secret level.
Clean Slate
Kill all monsters in any monster-filled level on 'Hurt me plenty' or higher.
Burning Out of Control
Complete any monster-filled level with 100% kills, items, and secrets.
A Man and a Half
Get 20 kills using the berserk powerup in a single level.
Untouchable
Complete 8 different levels sequentially under par time without dying on Ultra-Violence or higher.
Kill It With Fire
Immolate a total of 30 arachnoid enemies with the Incinerator.
Screen Wipe
Obliterate 50 enemies with a single shot of the Calamity Blade.
DOOM
Reach the end of 'DOOM'.
Sigil
Reach the end of 'Sigil'.
DOOM II
Reach the end of 'DOOM II'.
No Rest for the Living
Reach the end of 'No Rest for the Living'.
Master Levels
Reach the end of 'Master Levels for DOOM II'.
Evilution
Reach the end of 'TNT: Evilution'.
Plutonia
Reach the end of 'The Plutonia Experiment'.
Legacy of Rust
Reach the end of 'Legacy of Rust'.