Thanks. What your experiencing there is a collider thats preventing him from moving the way he SHOULD be moving. I need a better solution for this kind of game, like a 2D Nav Mesh which was not natively available at the time. There are actually just great packages available for free that make this kind of game much more workable so I'm going to check those out. Thanks so much for playing. I definitely think I should continue to build this with the next scene being the dark passageway behind the door :)
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Honestly with Unity I've never bothered with their navmesh stuff - it was 5 years too late, and way too weak for what it does. Much better to roll your own for simple cases (like this) or get one of the assets that does it far better I think (e.g. the A* free assets that have been around for 15 ish years now)