Hold down the keys simultaneously.
On the main menu, press Left Ctrl + Left Shift + F12 (or sometimes F9). This is rumored to trigger a debug unlock. unlock all mission in igi 1 game usttad
This is one of the most effective ways to unlock all missions in the full version of Project IGI . It involves using a save file from someone who has already completed the game. Hold down the keys simultaneously
While "USTTAD" is a mystery and likely a dead-end in the search for IGI 1 cheats, the methods above are proven to work. unlock all mission in igi 1 game usttad