This page contains Onslaught Unlockables for Xbox 360 called "Ultra difficulty" and has been posted or updated on Feb 20, 2009 by Zharlah.
- Developer: Stainless
- Publisher: Microsoft Game Studios
- Genre: Action
- Release: Jan 21, 2009
- ESRB: Not Set
Finish the game on Expert difficulty.
Please Submit a Problem for any incomplete, non-working or fake cheat listed above.