| April's Adventure Mode |
| As Donatello, successfully complete the Ghetto level. |
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| April's Apartment Stage |
| As Donatello, successfully complete the April's Apartment 2 level. |
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| April's Melee Mode |
| As Casey, successfully complete adventure mode. |
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| Autumn Stage |
| As Michaelangelo, successfully complete The Dojo level. |
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| Casey Jones' Adventure Mode |
| As Raphael, successfully complete the Subway level. |
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| Casey Jones' Jacket Costume |
| As April, successfully complete her adventure mode. |
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| Casey Jones' Melee Mode |
| As Casey Jones, successfully complete adventure mode. |
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| Casey Jones' Red Shorts Costume |
| As Casey Jones, successfully complete level the Ghetto level. |
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| Dojo Complete Stage |
| As Casey Jones, successfully complete the Turtle's Lair level. |
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| Foot Soldier's Adventure Mode |
| As Raphael, successfully complete his adventure mode. |
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| HUN 2's Melee Mode |
| As HUN, successfully complete his adventure mode. |
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| HUN's Adventure Mode |
| As Michaelangelo, successfully complete his adventure mode. |
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| Level Select (beta Version) |
| Start the game with the -unlocked command line parameter to unlock all levels in adventure story mode for all characters currently unlocked. |
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| Monster's Melee Mode |
| As Hun, successfully complete the Sewer Canal level. |
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| Sewer Falls Stage |
| As Raphael, successfully complete the Sewer Falls level. |
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| Sewers Stage |
| As Leonardo, successfully complete the Sewers level. |
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| Shredder's Adventure Mode |
| As Donatello, successfully complete his adventure mode. |
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| Shredder's Gold Costume |
| As Shredder, successfully complete his adventure mode. |
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| Shredder's Palace Exterior Stage |
| As Leonardo, successfully complete The Lab 12 level. |
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| Splinter's Adventure Mode |
| As Leonardo, successfully complete his adventure mode. |
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| Subway Stage |
| As Leonardo, successfully complete the Sparring With Splinter level. |
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| Tech Foot's Melee Mode |
| As Foot Soldier, successfully complete adventure mode. |
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| Waterfall Stage |
| As April, successfully complete the Turtle's Lair level. |
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