To be Invincible
Press X(3), R, A, L(2), Y at the code entry screen.

God Mode
Press Y, A, B, X, B, A(2), L at the code entry screen.

Play Any Level
Press Y, White, Black, L, A, R(2), Y at the code entry screen.

Fill Health Bar
Press X, R, A, Y, Black, B, A, R at the code entry screen.

Infinite Ammo
Press A, L(2), Black, B, White, L(2) at the code entry screen.

Fill Ammo
Press Black, B, A, R(2), A, L, Black during game play.

View Any Movie
Press A, Y, A, Y, Black, R, A, Y at the code entry screen.

Big Heads
Press L, Black, B, White(2), B, Black, L at the code entry screen.

Big Hands
Press R, White, X, L, White, R(2), Y at the code entry screen.

Big Boots
Press R, White, Y, A, L, B, White, X at the code entry screen.

Topsy Turvy
Press Y, A, B(2), A, B, White(2) at the code entry screen.