# All weapons

Pause the game, then hold L and press Right, B(2), Y, B. If you entered the code correctly, a message will appear. Note: Only weapons normally available in the current level will be unlocked.
# Invisible mode

Pause the game, then hold L and press Up, Left, Right, Up, B. If you entered the code correctly, a message will appear.
# Slow-motion mode

Pause the game, then hold L and press Left, Down, Up, Right, B. If you entered the code correctly, a message will appear.
# Fish eye camera

Pause the game, then hold L and press Left, Up, Right, Down, B. If you entered the code correctly, a message will appear.
# Beagle holes, footprints, and burns

Pause the game, then hold L and press Down, Up, B, Y, B. If you entered the code correctly, a message will appear.
# Alternate fade

Pause the game, then hold L and press Right, Up(2), Down, B. If you entered the code correctly, a message will appear.
# Alternate lighting

Pause the game, then hold L and press Up, Right, Up, Down, B. If you entered the code correctly, a message will appear.