If you don't want to run a registry file, you can sometimes find the human.cfg file in the game directory. By editing the mission completion values from 0 to 1 , you can trick the game engine into opening the subsequent maps. Troubleshooting Common Issues
(which can take hours of trial and error). igi 1 all mission unlock key fixed
If editing the files manually feels daunting, the "Fixed" community patch is the way to go. If you don't want to run a registry
If editing the registry makes you nervous, or if you are using a portable version of the game that ignores the registry, use the . Most trainers from 2005 cause crashes on modern CPUs. Here is the only one that works: If editing the files manually feels daunting, the
Unlock all missions from main menu: Type → MISSIONCODE
The "IGI 1 All Mission Unlock Key Fixed" is a modified version of the game that allows players to unlock all missions without having to enter codes. This fix has been tested and verified by several gamers, who have reported that it works seamlessly.
While modern versions of the game may vary, these are the primary ways to access every level immediately: