X2 Wolverine's Revenge - System: Gameboy Color

All Power Ups:
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At the main menu hold down the Left Trigger and press - 
Right, Left, Right, Left, Right, Left, Right. 

99 Lives:
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At the main menu hold down the Left Trigger and press - 
Right, Right, Right, Right, Right, Right, Right. 

Regenerate When Claws Are Out:
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At the main menu hold down the Left Trigger and press - 
Right, Up, Down, Right, Left, Select, Select. 

Invincibility:
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At the main menu hold down Left Trigger and press - 
Down, Up, Down, Down, Up, Down, Select. 

Unlimited Double Jumps:
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Go to the Main menu and Hold down the left trigger and press - 
Select, Left, Up, Down, Down, Up, Down. 

Defeating Pyro:
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Jump on the wall, then jump to the top. When Pyro shoots the fire 
circling around him, drop just before it hits the wall then dash to 
him. When he shoots out the birds, stay near the wall. When they 
are about to hit you, double jump over and slide below them. 
Repeat this until they burst. 

Alternate Costumes:
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If you want to unlock the alternate costume you have to press the 
next buttons in a short time (as quick as you can) UP DOWN, UP DOWN, 
LEFT RIGHT, LEFT RIGHT, B A.

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