Invincibility:
To unlock the 'Invincibility' cheat option select the 'Credits' option at the Main menu then press Circle, R2, Triangle.
All Upgrades:
To unlock the 'All Upgrades'cheat option select the 'Credits' option at the Main menu then press Circle, Triangle, L1.
Level select:
To unlock the the 'Level Select' cheat option Select the 'Credits' option at the Main menu then press Circle, R2, Triangle.
Cheat mode:
For every 10,000 points scored in the game the cheat options are unlocked. To unlock all of the following cheat options successfully complete the game.
Instant Death
Invincibility
Permavision (infinite scan vision)
Deathstare (automatically kill anything targeted)
Slo-motion
All upgrades
SGT. Candy Movie
Concept Art 1
Concept Art 2
Concept Art 3