To access all weapons in Project I.G.I.: I'm Going In , you can either use built-in cheat codes or download a "Weapon Mod" file that replaces mission data to unlock the full arsenal from the start. Method 1: Direct Cheat Codes

Watch this step-by-step guide to see how to install the All Weapons mod and use rare guns in every mission:

If you prefer more control, like infinite ammo or specific weapon IDs, you can use these tools: