: Go to your Project IGI installation directory and navigate to pc/MISSIONS/ Replace Files

If done correctly, the mission select screen should now show all 14 missions. Method 2: Editing the Configuration Files

⚠️ : The original IGI 1 doesn't have an official level skip cheat. Most "unlock all missions" solutions require editing save files or using a trainer.

Once successfully unlocked, you will have unrestricted access to the following 14 tactical operations: (The iconic infiltration intro) SAM Base (Destroying the anti-air missiles) Military Airbase (Stealing the fighter jet data) GOD (Infiltrating the massive underground chasm) Radar Base (Disabling the tracking arrays) Get Priboi (Capturing Jach Priboi) Border Crossing (The infamous, grueling stealth escape) Re-Supply (Replenishing gear at a snowy outpost) Missile Trainyard (Stopping the mobile launch platform) Defend Priboi (A chaotic, high-intensity firefight) Eagle's Nest I (Mountainous infiltration via cable car) Eagle's Nest II (Navigating the peak fortress) Nuclear Detonation (Race against the clock) Bomb Discovery (The final confrontation with Ekk) Troubleshooting Common Issues

The "Replace Save File" method (Method 1) is the gold standard for the version. It instantly grants you access to the entire arsenal and map list, letting you enjoy David Jones' adventure without the frustration of restarting from the beginning every time.

You can enable a specific "mission skip" cheat while playing: At the main menu, type to enable the cheat mode. Start a mission and type during gameplay.

If you are already in a mission and want to move to the next one immediately: : Pause the game and type Left Ctrl + Left Shift + F12 during gameplay to instantly complete the current mission. Method 3: Mission Folder Hack (Weapon/Level Mods) Some portable versions, including those shared by Project IGI 1 Unlock All Weapons , suggest replacing internal game files: Navigate to your Project IGI installation folder.

Look for a line that says MissionReached = 1 . Change Value: Change the number to 14 . Save: Save the file and restart the game. Method 3: Using a "Save Game" File

Open the folder where you have installed or extracted the IGI 1 Usttad Portable game.

It can run on systems with as little as 3GB RAM and 512MB graphics, making it ideal for older laptops. Pros & Cons Pros Cons Immediate access to all missions. Removes the sense of progression and challenge. Portable and easy to transfer via USB. AI can be "janky" and unpredictable. Great for testing weapons across different maps. Still lacks the mid-mission save feature.