From outside i.e from mountains hit soldiers ones or twice so that they understands that you are their & they come outside,run on mountains When you are in third level, first try to shoot guards from a distance where they can’t see you. then start the game then enemy’s willnot shout you or kill you, If thay see you than thay will run away like civlian. Go project IGI installed folder then goto commen\ai backup the folder ai, There will some files like “civlian.qvm”, “guard.qvm” like that names of enemy’s copy the file “civlian.qvm” and paste it in that same folder, if willbe like copy of civlian.qvm then rename enemy’s files into some other names then rename copy of civlian.qvm into name of enemy’s files like guard etc. There’s a secret gun in the whole game and it is on the last level behind the crates as you kill two guys right and left with spaz 12 and open the door to the crate room and the gun is colt anaconda!