Interesting.
Due to a bug, you can look through walls.
To be honest, without this bug would not have been able to pass the game ; D
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When I work on the full game I will definitely be easing the player into looking around the environment and having more cues for what walls are fake. The bug is related to Unity's controller, but I think it's fine to leave it in since players will think they are clever by peering into a storage room they can't access and seeing a skeleton or something lol.