X2: Wolverine's Revenge Cheats for XBox
Press X, L, X, L, X(2), L, R at the main menu.
All Cerebro files and FMV sequences:
Press X, L, X, L, X(2), R, L at the main menu.
Press X(2), L(4), X(2), L at the main menu. Now you can pause gameplay to access the "Cheats" option.
Level select and all challenges:
Press X, L, X, L, X, L(2), R at the main menu.
Press the following buttons in this order on the Main Menu to unlock everything:
At the start screen press X,L(trigger), X, L(trigger), X, X, L(trigger), R(trigger), L (trigger)
After you finish, the level select option will appear and you will have access to all costumes, dog tags, movies, & artwork.
p.s. - In order to get invulnerability you may have to repeat the code a few times and start the game to see if it works.
When you do this pause during gameplay and you should see the cheats options to turn invulnerability on, if not you will have to try the code again at the start menu and continue to check.
But it does work!!