Essentially, if you use a controller, you can start the game and then swap the map while the game is loading, which allows you to change the map to your character's map that they are possessed on. It spawns you inside the attic if you use it to play Anna on the Farmhouse, and then it is harmless on every other map. I have a video guide for this exploit that goes more in-depth as well as shows inputs in order to perform the exploit.

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