X2: Wolverines Revenge Cheats

At the main menu

Wait for him to stop chasing you, then run behind him. Hit him once or twice, then option for your special will appear. When you use your special, you will grab his tail. Spin him around and toss him. After several tosses, he will stand weak in the middle. Run up to him and use your special.

All costumes:
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.
Cheats option:
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.

X2: Wolverine's Revenge [Xbox] Master code:
Press X, L, X, L, X(2), L, R at the title screen. New options will be unlocked each time this code is enabled.

Level select and all challenges:
Press X, L, X, L, X, L(2), R at the main menu.

All costumes:
Press 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.

Invincibility
Enter the following at the main menu:

X,X,L,L,L,L,X,X,L

If done correctly, you will hear a tone. Now when you begin a game, there will be a 'Cheats' option on the pause screen. You can toggle Invincibility On/Off from there.

During Part IV: Grim Discoveries, after you have taken the elevator down into the cavern, you will face the Wendigo and three soldiers. Instead of feeding the soldiers to the Wendigo, knock the gun out of each of their hands and lure them to an open area. Next, position yourself so you can perform a level 3 strike on each of them simultaneously. You will be rewarded with 150,000 points and a dog tag if the "Claw Slam" Strike is successful. Finally, if you run away from the elevator, three more soldiers will rappel into the shaft with you. You can repeat the process as many times as needed for lots of points and dog tags. Note: If you die you will have to restart the level. For best results, use the "Invincibility" cheat.

To unlock everything in the game, including level select, press X, L, X, L, X, X, L, R, X, L, X, L, X, X, L, R at the title screen. (An alternate code is X, L, X, L, X, X, L, R, X, L, X, X, L, R.) Make sure Level Select appears at the main menu to confirm entry.