If you are having trouble getting these methods to work, let me know:

Here’s a strange bug discovered in v1.0 (unpatched): If you rename the mission file 14.ig (last mission) to 01.ig and launch New Game, the game loads the final mission as first. But saving breaks, and you can’t go back. Not a true “unlock all,” but a worth noting for nostalgia.

Many players consider Mission 13 or 14 the most difficult due to the sheer number of enemies and strict objectives. Is using a trainer safe?

To unlock all missions in Project IGI 1 (I'm Going In) , you can use a keyboard shortcut at the main menu or manually swap mission files. Method 1: Keyboard Shortcut (Easiest)

Open Project IGI and wait for the main menu screen to load completely.

You will now see all 14 missions listed and unlocked, allowing you to select and play any level instantly. The Config File Configuration Method

– Raid a military depot to re-arm your inventory.

: Look at the trainer menu to see which hotkey unlocks the missions (usually F1 , F2 , or a specific Numpad key). Press that key while in the game menu. Project I.G.I. Mission List Reference

Yes – unlocking missions in a game you own for personal use is legal under fair use. The Usttad method is a mod, not piracy. That said, do not download IGI 1 from illegal torrents if you don’t own the original CD. The game is abandonware now, but support GOG.com if they ever re-release it.

Are you playing the , a digital download, or a specific modded version ?

Using the imdone cheat or the F12 shortcut to signal a "Mission Success" state to the engine without completing objectives. 2. Alternative Methods