You can skip missions one by one while playing by using a specific cheat command: Enable Cheat Mode
If you are on a restricted computer and cannot download a save file, you can edit the existing one using a Hex Editor (like HxD). igi 1 how to unlock all missions
Usually in C:\Program Files\Project IGI\mission . You can skip missions one by one while
– Entering the heart of the enemy base. Finding Ananya – Rescuing your tactical advisor. The Bomb – The final showdown to defuse a nuclear threat. Finding Ananya – Rescuing your tactical advisor
: Once active, you can type these during gameplay: allgod : God Mode. allammo : Unlimited Ammo. easy : Sets difficulty to easy. Quick Tips for Difficult Missions
For other in-game cheats to work, you may first need to enable a "Cheat Mode." : Type Nada at the main menu.
This is the most reliable way to "unlock" missions without downloading external files. You can trick the game into thinking you've finished a level to progress to the next: