- Easy 'WoW!' achievement
Go to the Alkali Lake section of the Frozen Tundra (before the Agent Zero fight). Immediately after the long road section with the shield troops is a fallen tree. Enter the forest that leads to a cave. Inside will be the sword and skeleton.

- Easy 'Threading The Needle' achievement
When falling during the Boss battle with the Sentinel, destroy the second turbine on the Sentinel's back. Fly through the large O-ring that falls off at the correct moment to get the 'Threading The Needle' achievement.

- Alternate costumes
Successfully complete the indicated task to unlock the corresponding costume:

Classic Wolverine (blue/yellow)	Acquire the two action figures of Classic Wolverine. Then, defeat Classic Wolverine in his challenge.
Legendary Wolverine (brown/yellow)	Acquire the two action figures of Legendary Wolverine. Then, defeat Legendary Wolverine in his challenge.
X-Force Wolverine	Acquire the two action figures of X-Force Wolverine. Then, defeat X-Force Wolverine in his challenge.

- Infinite rage
While you are playing this game, press Y, X(2), Y, B(2), Y, A(2), Y, click Right Analog-stick. If you entered the code correctly, you will hear a sound. Notice: This code prevents achievements from being unlocked. To prevent this from happening, activate the code, then quit to the main menu. Select 'Continue' or 'Replay Mission', and you will now be able to unlock achievements with the code activated.

- Classic Wolverine (blue/yellow) costume
While you are playing this game, press A, X, B, X, A, Y, A, Y, A, X, B(2), X, click Right Analog-stick to unlock Wolverine's classic blue and yellow costume. If you entered the code correctly, you will hear a sound. Then, exit to the main menu, and switch costumes.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
Getting Begined	Killed 100 enemies.
Lunge	Lunged to 25 enemies.
Drop Dead	Killed 10 enemies by throwing them off high areas.
Apprentice	Raised One Combat Reflex to Master Level.
Aerial Assault	Performed 10 Air Grabs.
Quick Killer	Quick Killed 1 enemy.
Piggy Back Ride	Lunged to a W.E.N.D.I.G.0 prototype's back.
Defensive	Performed 1 Counter move.
Catch!	Killed 1 enemy with a reflected projectile.
15 Points
Slice n' Dice	Killed 6 enemies with a single attack.
Mutant Lover	Raised one Mutagen to level 3.
Pounce	Lunged to 100 enemies.
Slaughter House	Dismembered 100 enemies.
Aerial Master	Got 6 enemies airborne at once.
James Howlett	Performed a Wolverine to Wolverine Lunge.
Environmentally Friendly	Killed 10 enemies using objects in the environment.
Shotgun Epic Fail	Killed 25 Ghosts with their own weapon.
Efficient Killer	Quick Killed 20 enemies.
Found!	You found a mysterious hatch.
WoW!	You feel cold as you examine the skeleton and read the name 'Arthas' etched into the nearby sword.
Ultimate Wolverine	Fought 4 W.E.N.D.I.G.0 prototypes at the same time and defeated them at Alkali lake.
The Cake	You found the cake, yummy.
20 Points
Heightened Senses	Killed 200 enemies in Feral Sense.
Whatever it Takes	Killed 30 enemies using objects in the environment.
Perfect Killer	Quick Killed 3 enemies sequentially.
Untouchable	Performed 25 Counter moves.
Bloodlust	Killed 50 enemies while in Berserker mode.
A Day's Work	Killed 500 enemies.
Hot Potato	Light 20 enemies on fire.
Astonishing	Found 1/2 of all Dog Tags in the game.
Boomerang	Killed 25 enemies with a reflected projectile.
You Can't Hide	Lunged to 250 enemies.
25 Points
Samurai	Raised All Combat Reflexes to Master Level.
Weapon X	Killed 150 enemies while in Berserker mode.
Blender	Killed 200 enemies with Claw Spin.
30 Points
Devil's Brigade	Found all Dog Tags in the game.
What I Do Best	Killed 2000 enemies.
35 Points
Fully Loaded	Maxed out all upgrades.
50 Points
Walking Death	Clear the game on Hard Difficulty.

10 Points
Stick Around	Impaled Victor Creed outside the Bar.
15 Points
Threading the Needle	Flew through the O ring in the Sentinel Boss Battle.
30 Points
The Village	Finishd the Jungle Mission.
Fallen Sentinel	Overcomeed the Sentinel Mark.
Spillway Escape	Escapes from Weapon X.

- Faster enemy reflex
While you are playing this game, press A(2), X(2), Y(2), B(2), Y(2), X(2), A(2), click Right Analog-stick. If you entered the code correctly, you will hear a sound. You will gain double reflex with every kill. Notice: This code prevents achievements from being unlocked. To prevent this from happening, activate the code, then quit to the main menu. Select 'Continue' or 'Replay Mission', and you will now be able to unlock achievements with the code activated.

- Easy 'The Cake' achievement
There is a part in the Sentinel factory where you must freeze yourself to get past a heat detector. Move a teleporter all the way to the right. It will go through the wall and enter a secret room. Teleport there to collect the cake that is inside and get 'The Cake' achievement.

- Easy 'Found!' achievement
After you crash the jeep on the first level and continue, you will reach an area with a barricaded gate. Climb over the rocks, and go in. Overcome the enemies. Look for some boards over a small doorway off on one of the areas. Slice them up, and enter to find the hatch on the ground near the back corner and get the 'Found!' achievement.

- Hard mode
Successfully complete the game to unlock the Hard difficulty.

- Invincibility
While you are playing this game, press X, A(2), X, Y(2), X, B(2), X, click Right Analog-stick. If you entered the code correctly, you will hear a sound. Although you will lose health you cannot die. Notice: This code prevents achievements from being unlocked. To prevent this from happening, activate the code, then quit to the main menu. Select 'Continue' or 'Replay Mission', and you will now be able to unlock achievements with the code activated.