This page contains Doom 3 Unlockables for Xbox called "Nightmare mode" and has been posted or updated on Jan 29, 2009 by xBAMFx BLOODY. Let us know what you think of this Unlockable by thumbs voting.
- Developer: Vicarious Visions
- Publisher: Activision
- Genre: Action Shooter First-Person
- Release Date: Apr 3, 2005
- ESRB: Mature
Beat the game on any difficulty setting, When you start on Nightmare mode, you begin with the Soul Cube
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