Invincibility and Infinite Ammo
At the title screen press L1 + L2 + R1 + X + Triangle + Left
Level Select
At the title screen press L2 + R2 + Square + Circle + Up
Soda Energy
See those Soda Machines in some levels? They are not there just for the design. Punch it or shoot it so a can of soda flies out. Come up to the pop and press X. Viola! Instant Rage!