Cheat code

to enable all cheats first type nada at the main menu

1 easy mode-easy
2 god mode-allgod
3 unlimetted ammo-allammo
4 kill all enemies-ewww
type unlimitedammo(no space between unlimited and ammo)in the target by opening properties
of igi icon in the desktop.like this u will have unlimited ammunition.

for unlimited weapons type pad during game and u will get unlimited weapons

type 'iamoneamongthem' and immediately type 'theyareoneamongme' you will become disguised
as a enemy and they won't attack you