L1 + L2 + R1 + R2 + Down + R3 (Press in right analogue stick)
All levels will be unlocked and a new CHEATS menu will appear in the pause
screen. The new options are:
Infinite Armour
Big Head
Top Camera
Low Friction
Fly Mode
Torch
800EA55A 0064
Infinite Ammo
800961C0 2400