cheats having trouble getting to work
bizarro rampage?
model change?
infinite health, indestrucible city, all unlockables etc.? probley this one.
tell me specific problems.

sry about the first response.
go the pause menu, enter the cheat code u want and presto change o. u will not hear a
conformation sound for the infinite stamina code(god mode), but u will for the others.
enter it again to turn it off.