When your playing the game hit the shift button aswell as ~ at the same time, a window should appear. Depending on when you bought the game either type in "devmapall" (enter), or "helpusobi" (enter).
You are noe ready to enter cheats.
code--------------Result
god You can almost do any thing without dying
notarget invisibility
give weapons gives all weapons
give health heals you
give ammo replenishes your ammo
give batteries full battery bar
iknowkungfu beat opponets to death with hands
setforceall<1-4> sets all force powers