# Infinite health

At the "Extra" menu, press Left, Right, Up, Down, L3, Square.
# Infinite supplies

At the "Extra" menu, press Select, R1, L1, Select, R3, L1.
# Hippy blood

At the "Extra" menu, press L2, Right, Circle, Down, R1, Select.
# Extreme ragdoll

At the "Extra" menu, press Up(3), R2(3), Up.
# Low gravity ragdoll

At the "Extra" menu, press Square(3), Circle(3), Up, Down.
# Completion bonuses

Successfully complete the game on any difficulty setting. Start a new game, enter the "Options" menu, then select "Cheats". The following cheat options may now be activated:

Extreme Ragdoll

Hippy Blood: Changes spilled blood into colorful flowers.

Low Gravity Ragdoll: Enemies will fly away when killed. Put them in orbit by destroying their oxygen tank.

# Level select

Successfully complete a level to unlock it at the "Cheats" menu.
# All weapons and upgrades

Successfully complete the game. Instead of starting a new game, use the "Level select" cheat and start on the first level to keep all your weapons and upgrades from the previous game.
# Massacre mode

Successfully complete the game on any difficulty setting to unlock the Massacre difficulty setting.