If you use the Konami code (U,U,D,D,L,R,L,R,B,A) at the title screen. You will hear the turtles yell cowabunga, and it will show cowabunga as well.
Contributed By: logannagol.
In the "Options" menu select "Input Password" and enter any of the following:
Effect Password Crystals become Easter Eggs SRDSLLMS Crystals become Jack-O-Lanterns DRSSMRLD Crystals become Santa LLDMSRMD Life Icons become Pizza DDRMLRDS
Contributed By: Cloud20390.
Completing various areas of the game
Unlockable How to Unlock ALternate ending Picture Collect all gems in Story Mode Donetello picture Complete mission mode with Donetello Leonardo Picture Complete mission mode with Leonardo Michaelangelo Picture Complete mission mode with Michaelangelo Rapheal Picture Complete mission mode with Rapheal
Contributed By: Nickf42.
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