I seen probably two versions of zombieland with this, look in main and onPlayerSpawned() see if you can find a self thread thats called self thread enhanced vision, or self thread gross shitty green vision. something on the lines of that, then check init() for anything that says level thread green vision and so on. Im guessing they call there function in the main.gsc. Once you found the line put "//" before it to cancel it and stop it from being called