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XBox - Teenage Mutant Ninja Turtles:Mutant Melee cheats

Unlock stages:
Waterfall Stage: Finish the Turtle's Lair level as April.
Subway Stage: Finish the Sparring With Splinter level as Leonardo.
Shredder's Palace Exterior Stage: Finish The Lab 12 level as Leonardo.
Sewers Stage: Finish the Sewers level as Leonardo.
Sewer Falls Stage: Finish the Sewer Falls level as Raphael.
Dojo Complete Stage: Finish the Turtle's Lair level as Casey Jones.
Autumn Stage: Finish The Dojo level as Michaelangelo.
April's Apartment Stage: Finish the April's Apartment 2 level as Donatello.

Unlock costumes:
Casey Jones' Red Shorts outfit: Finish level the Ghetto level as Casey Jones.
Casey Jones' Jacket outfit: Finish her adventure mode as April.
Shredder's Gold outfit: Finish his adventure mode as Shredder.

Unlock adventure modes:
Casey Jones' Adventure Mode: Finish the Subway level as Raphael.
April's Adventure Mode: Finish the Ghetto level as Donatello.
Splinter's Adventure Mode: Finish his adventure mode as Leonardo.
Shredder's Adventure Mode: Finish his adventure mode as Donatello.
Foot Soldier's Adventure Mode: Finish his adventure mode as Raphael.