On the main menu, press;
high pitch voices(Enemies): R, R, Y, B, X, BLACK, L, DOWN
Invisibility: X, X, X, DOWN, X, DOWN, B, UP
Regenerate: WHITE, RIGHT, B, WHITE, BLACK, DOWN, B, LEFT
Infinite Running: WHITE, WHITE, L, WHITE, LEFT, RIGHT, LEFT, RIGHT
Silence: R, L, WHITE, L, RIGHT, LEFT, LEFT, LEFT
Big Punch: L , Y, Y, Y, B, B, B, R
Full Weapons: R, WHITE, L, BLACK, DOWN, UP, LEFT, UP
Pig Skin: UP, DOWN, LEFT, LEFT, R, WHITE, L, L
Rabbit Skin: LEFT, R, R, Y, R, R, X, L
Monkey Skin: X, X, WHITE, DOWN, Y, X, B, DOWN