Great submission! That was impressive work for a jam, and your first 3D game. Be proud!
I did love it, didn't think I could enjoy something like that. My only critique is perhaps make the 3D work with the tiles. So when you move left, you move left one tile. But I know it would remove 90% of level features, which is silly. Something to bear in mind with the 3D movement.
Well done :)