Doom
- Secret Gamerpic
- Successfully complete any level on the Nightmare difficulty setting to unlock a Gamerpic of a demon.
- Achievements
- Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- Neophyte (20 points): Successfully complete any level.
- Episode One (25 points): Successfully complete Episode 1 on the "Hurt Me Plenty" or higher difficulty.
- Episode Two (25 points): Successfully complete Episode 2 on the "Hurt Me Plenty" or higher difficulty.
- Episode Three (25 points): Successfully complete Episode 3 on the "Hurt Me Plenty" or higher difficulty.
- Episode Four (25 points): Successfully complete Episode 4 on the "Hurt Me Plenty" or higher difficulty.
- Rampage (35 points): Successfully complete all levels on UltraViolent mode.
- Nightmare (10 points): Win a Nightmare level in single player.
- Rookie (10 points): Get 50 kills on Xbox Live.
- Destroyer (10 points): Get 100 kills on Xbox Live.
- Scout (5 points): Find a secret area of a map.
- Hoarder (5 points): Find all items in level.
- Clean Slate (5 points): Kill all monsters in a level on the "Hurt Me Plenty" or higher difficulty.