A lovely little experience that fits the theme really well. I did have some substantial performance issues so I downloaded the exe and I was still suffering from some pretty extreme lag.
I hope you don't mind; but I was really surprised that I was having performance issues. When I took a frame capture the drawcalls jumped out at me, ~11,000 on one of the more demanding frames which is several orders of magnitude higher than it should be (I would expect 50-100 for this game). I'm guessing the levels are procgen?
In which case the meshes and materials are not making use of instancing. Instead are treated as unique and given their own drawcall which explains the performance issues. I've run into this exact issue myself on a little project. I'm only on a 1660 so it was probably more apparent for me, anyone of a 20 series or above probably wont even notice.
Aside from that small hiccup,I had a good of fun. The movement controller is nice, the persepective is excellent and thematically you're on point. Thanks!