Please note VGF's cheat codes have relocated to the main page.
Psi-Ops: The Mindgate Conspiracy
Bottomless Pit
Go to main menu and select Extra Content and press R. Enter: 154897.
(Thanks to GCube00@aol.com)
Floor of Death
Go to main menu and select Extra Content and press R. Enter: 05120926.
(Thanks to GCube00@aol.com)
Psi Pool
Go to main menu and select Extra Content and press R. Enter: 565485.
(Thanks to GCube00@aol.com)