cheat-------------------------------------------------------------------------------------effect
up,up,up,left,down,down,down,left,up,up,up,left,right...............invincibility
up,down,left,down,down,left,down,down,left,down,down,down,left,right.............infinite ammo
note:when a cheat is entered correctly, you will hear a noise.
note:cheats must be entered rapidly using the arrows on the left side of your psp
note:cheats only work for single player
enjoy!