goto:C:\Program Files (x86)\Steam\steamapps\common\Hitman 2 Silent Assassin\
open Hitman2.ini with notepad
Add these 2 lines to the end of the file:
Ingame Press the tilde ` key
enter the following cheats:
god 1 - God mode
giveall - All weapons with max ammo
invisible 1 - Invisibility
infammo - Infinite ammo
This is for the latest steam version which uses the old demo cheats.
The new steam version does not use the
the original IOI cheats!