Hold L, press A, B, X, Y, B, A
999 Heavy Ammo
Hold L, press A, B, Y, X, Y, X
Access Secret Mission without finishing all missions
Hold L, press A, Y, X, B, Y, X
All Missions
Hold L, press A, X, B, Y, A, Y, A, A
Fixing a Toy
Hold L, press X, A, Y, B, A, X
Heavy Weapon
A, A, A, B, B, B (on main menu)
Launch Credits
Hold L, press A, B, Y, X, Y, X
Level Select
Hold L, press B, Y, A, X, B, X
Max Fuel
Hold L, press B, A, Y, X, A, B
New Machine Gun