Maybe I'm stupid but I didn't understand what I had to do :/
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Well, I mentioned it on the game's page: I didn't have the time to finish it before the deadline, and it's far from completion. The tetrahedron was supposed to chase you but I added pi instead of 180, good job meeee.... The rest wasn't even started to be implemented.
So that's just a proof of concept. For more details refer to the game's page ^^