Limitations: This is tedious. It does not give you "unlimited" instantly, and it does nothing for your health. It also does not work on all versions (patch 1.2 fixed it partially).
Take down any enemy, including armored guards, with a single shot. project igi cheat codes for unlimited health and ammo
Start any mission and wait for the intro cinematic to finish. Limitations: This is tedious
If you are struggling to survive David Jones's stealth missions, this comprehensive guide covers everything you need to know about unlocking unlimited health and ammo. The Reality: Are There Official Cheat Codes? including armored guards
Move to different coordinates on the massive maps instantly. Pro Tips for Project IGI Gameplay