The above trick sometimes only unlocks missions up to Mission 12. The true Usttad method goes further:
Copy IGI.INI to your desktop as IGI.INI.backup. Mistakes happen.
You will see something like this:
[Game]
difficulty=0
sound=1
mission=4
subtitle=1
sensitivity=0.78
The key line is mission=4. That means Mission 4 is the last unlocked. To unlock all missions including the secret training mission, change it to:
mission=15
Yes, 15. Even though there are only 14 numbered missions (1 through 14), the game internally treats the Training as Mission 0 or Mission 15 depending on the version. Setting mission=15 unlocks everything. unlock all mission in igi 1 game usttad
Title: A Nostalgic Shortcut: Does the "Unlock All Missions" Cheat Deliver?
Rating: ★★★★☆ (4/5)
The Verdict: For fans of the classic Project I.G.I. (I'm Going In), the "Unlock All Mission" file—often associated with the keyword "usttad"—is a blast from the past that successfully delivers on its promise. It eliminates the often frustrating progression system of the original game, allowing players to jump straight into the action.
Pros:
Cons:
Final Thoughts: If you are a veteran IGI player looking to relive specific memories without the grind, this unlock file is an essential download. However, first-time players should avoid it to experience the game as it was originally intended.
Some players recall a specific trainer called "IGI Ustad Trainer" or "Usttad All Mission Unlocker"—unofficial third-party software. While these exist, they often trigger antivirus warnings. Use with caution:
Security warning: Many trainers contain malware. Only download from reputable archival sites like Archive.org or GameBurner. The above trick sometimes only unlocks missions up
Unlike modern games that require complex "trainer" downloads or mod installations, I.G.I 1 has a beautifully simple unlock mechanic built right into its files. You don't need to be a computer genius; you just need to know where to look.
Disclaimer: Always make a backup copy of your file before editing it, just in case something goes wrong.
Right-click IGI.INI → Properties → Check Read-only. This prevents the game from resetting your progress to Mission 1 after you play a later mission. This was the killer feature of the Usttad trainer.