Press - R, L, Black, White, L, Y, Y, Black, R, White
Press - L, L, R, L, Y, X, White, Black, Black, White
Enter this code from the in-game pause screen. Do so very quickly, you will hear a sound ring out if done correctly.
Press Black, White, L Button, X, L Button, White
Press R, Black, Y, Black, L, White
Several bonus costumes will be unlocked when you beat certain levels
-Free Roam Mode-
After finishing mission 4 you will get Free Roam which allows you to replay any previously finished mission