The following are known CWCheat Codes for Resistance: Retribution on Sony Playstation Portable (PSP).

_S UCES-01184
_G Resistance: Retribution [EU]
_C0 Even Quicker Game
_L 0x08E9C420 0x3FC00000
_C0 HP Infinite
_L 0x605E6BEC 0x47C35000
_L 0x00020001 0x00000024
_C0 Hyper Mode
_L 0x08E9C420 0x40000000
_C0 Infinite Health (Use in level)
_L 0x68ED3B94 0x00000000
_L 0xB8ED3B94 0x00000000
_L 0x00000024 0x43C80000
_L 0xD2000000 0x00000000
_C0 Infinite Primary Ammo
_L 0x08AACD54 0x24020001
_C0 Max Ammo 3guns
_L 0x00959550 0x0000270F
_L 0x0152E410 0x0000270F
_L 0x0094BF60 0x0000270F
_L 0x00F88F8 0x0000270F
_C0 Normal Speed
_L 0x08E9C420 0x3F800000
_C0 Pause Cheat Menu ON (Invincibility/Level Completion)
_L 0x28E9C1C8 0x00000001
_C0 Quicker Game
_L 0x08E9C420 0x3FA00000
_C0 Slow Motion
_L 0x08E9C420 0x3F000000