Game Cheats: X-Men: The Official Game - Unlock Danger Room Missions
Unlock Danger Room Missions:
There are eight danger room missions. You unlock the first three as you play through the game. To unlock the other six danger room missions, you must collect all Sentinel files and Weapon X files with each character.
Unlock Nightcrawler Danger Room:
Press: Up, Up, Down, Down, Left, Right, Left, Right
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