X-MEN: THE OFFICIAL GAME UNLOCKABLES
Danger Room missions
Progress through the game to unlock the first three Danger Room missions. Six more Danger Room missions are unlocked by collecting all Sentinel files and Weapon X files with all characters.
Comic alternate costume
Collect all Sentinal Techs with a character to unlock his or her alternate comic costume.
Street alternate costume
By collecting all Weapon X files with a character you will unlock his or her alternate street costume.