Unlock everything
Go to the title screen and press X, L, X, L, X, X, L, R.
Repeat several time to get everything unlocked.

Master code:
Press X, L, X, L, X(2), L, R, X, L, X, L, X(2), L, R at the main menu.

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

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.
Pause game play to access the "Cheats" option.

Hint: Defeating Juggernaut:
When the battle begins, you are in a force field arena. Try not to hit the force field, or you will get hurt. Enemies from outside the force field will be throwing green gas grenades at you. If you get dizzy from the green gas, rotate the Left Analog-stick to regain control of Wolverine. Juggernaut has a special move where he creates shockwaves by slamming his hands together. Try to get as far away from him when he does this to avoid getting hurt. Juggernaut is invincible while running; make him run into the the force field "corners". The best way to do this is to stand at one of the "corners" opposite from where Juggernaut is standing. When you make Juggernaut hit one of the "corners", he will get shocked, get thrown into the middle of the arena, and will become dizzy. Run up to him and hit him a few times. When you see the "Strike" message, strike him to make him lose health. Do this at least three or four times. After you strike Juggernaut several times, you will see Colloso jump over the force field fence. Run up to him and press Strike to make him throw Wolverine at Juggernaut to defeat him.

In the first part, lure him into the actual poles of the fence. When he flies away and lands dazed, attack him from side and watch for the "Strike" message to appear. Later when he starts jumping, jump to avoid the shockwave and try to get him to jump into the electric beams. He is weak after he jumps. He will stand and send a series of shockwaves. Also jump over these. If he is on one side of the "ring", run to the other side to avoid them. Watch out for the gas. When his health is gone, you must to finish him with a strike. Note: Beware of gas and watch your bar for your sickness level.

Hint: Defeating Lady Deathstrike:
Start by fighting as if in a normal battle. Then, climb up the ladder when she cannot move. Next, blow up the four generators. You do not fight her here. Then, rip open the gate and jump down. It gets difficult at this point. Run around until you find the key. Then, go up to her, but not too close. Kick her; do not stab or punch her or you will get hit. Then, only hit the pole in front of her when she shoots electric waves. In between the waves, kick her, but do not get too close. While she is on the ground, a pole will have electricity on it. Stab it and the electricity will transfer to another pole, and so on. Do this until the door opens. Go up the stairs, then Lady Deathstrike will jump up. Kick her until she falls off the left side. She will die.


Hint: Defeating Sabretooth:
When fighting Sabretooth for the second time, at first it is the same as before. Jump behind him and use your special to throw him into the trucks. After a few throws, he will jump behind the flames and start throwing barrels. Punch them back at him. When he is done with that, he will come back out and start jumping around. When he is in the air, a green crosshair will appear on the ground. Run to it and use your special to defeat him.

Hint: Defeating Wendigo:
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.

Hint: Best approach and attack:
When scouting for enemies use Wolverine's heightened senses. Once you have spotted an enemy, make sure you are close enough to see them clearly, but not be spotted. If you watch them for a few moments in heightened senses mode, a faint hazy figure of Wolverine will demonstrate the best approach and attack.

Hint: Blooper FMV sequences:
When you complete the game, go to the title screen and select the "Bonus" option. Go to "Gallery" and select "Play Movies." Go to the bottom of the screen to the last three movies and you will find two bloopers with Wolverine and one blooper with the Wendigo.

Hint: Star Wars reference:
Wolverine's voice is done by Mark Hamill, who played Luke Skywalker. For the Juggernaut battle, he fights a man with ultra psychic powers wearing a helmet. Juggernaut uses the word "Force" every other line.


Glitch: Infinite score and dog tag loop:
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