Here is the way to unlock all missions of the IGI 2 PC game only by just pressing 3 keyboard buttons ( IGI 2 cheat code to unlock all levels).
Steps to Unlock all missions of IGI 2 PC game.
- Open IGI 2 covert Strike PC game
- Come on Main menu.
- Press the CTRL(left)+SHIFT(left)+F9 keyboard button at the same time to unlock all missions of IGI 2 PC game.