If you just want to play all missions without grinding:
To make these newly unlocked missions easier, you can activate cheat mode: IGI 1 Cheat Codes and Unlocks Guide | PDF - Scribd igi 1 all mission unlock key fixed
: Always backup your original game files before replacing them. 2. Developer Console Unlock If you just want to play all missions
Project I.G.I. is famous for its punishing AI and "one-shot" difficulty. Because the game doesn't feature an in-game "Unlock All" button, players usually have two choices: igi 1 all mission unlock key fixed
Create a new text file called unlock_all.reg (or download it from a trusted abandonware archive). Paste the following code exactly: