X-Men: The Official Game Cheats - Xbox
Primary Collection of Cheats
Bonus Iceman Danger Room Level
Press [Right]x2, [Left]x2, [Down], [Up], [Down], [Up], [Start] at the Cerebro Files menu.
Bonus Nightcrawler Danger Room Level
Press [Up]x2, [Down]x2, [Left], [Right], [Left], [Right], [Start] at the Cerebro Files menu.
Bonus Wolverine Danger Room Level
Press [Down]x2, [Up]x2, [Right], [Left], [Right] [Left], [Start] at the Cerebro Files menu.