Commence the game and sort in these cheats during the cheat box (Be aware - it will likely not say cheat enabled or nearly anything):
NOHIT - Invincibility
MOREAMMO - Infinite Ammo
POINTER - Adds a Laser Sight
FASTFIRE - Shoot really quick
Tackle a number of the quickest gun slingers on earth and get rid of them all. Utilize the hack codes to help your chances and maintain you alive extended.