Pause the game, select Cheats from the Options menu and enter the following codes.

• Any Level - press Y, White, Black, L, A, R, R, Y.
• Invincible - press X (x3), R, A, L, L, Y.
• God Mode - press, Y, A, B, X, B, A, A, L.
• Fill Health Bar - press X, R, A, Y, Black, B, A, R.
• Fill Ammo - press, A, L, L, Black, B, White, L, L. 
• Topsy Turvy - press Y, A, B, B, A, B, White, White.
• Big Heads - press L, Black, B, White, White, B, Black, L.
• Big Hands - press R, White, X, L, White, R, R, Y.
• Big Boots - press R, White, Y, A, L, B, White, X.
• View Any Move – press A, Y, A, Y, Black, R, A, Y.