IGI 2: Covert Strike

Unlock ALL Missions:
At the 'Main' menu press Ctrl + Shift + Alt + F9 to unlock ALL the missions.

How to clear 6th mission:
Kill all guards , open both inner and outer gate( complete mission-5) and come back on the roof of the building situated over the main gate and aim sniper rifle again, asa you aim the rifle Nimoy gets in the truck and 6th mission gets completed.

Guards stand still:
Go to igi 2 folder then go to search and search ai folders. When all ai folders com on the screen so chang all ai to a and when you start the game all the guards stands still but watch out for tanks and helicopter.