TMNT cheats and cheat codes for Nintendo Wii

Don's Big Head Goodie:
Hold Z and press 1, A, C, 2 at the main menu. 
If the code is accepted, you will hear a sound

Challenge Map 2:
Hold Z and press A three times, 1, A at the main menu. 
If the code is accepted, you will hear a sound

Relationship:
When you are fighting, use the turtle's special move then fight until 
more enemies appear. Switch turtles and do the same thing until all 
enemies are defeated to get an "A" rating.