As it should be, the artwork is very beautiful. I know you told me that shaders are doing all the heavy lifting, but to the player, it doesn't matter why the art is beautiful, just that it is. You outdid yourself with the art.
As you already mentioned, there's some glitches and bugs, so I'm not going to point those out unless you want me to. My only other critique is that I do not know what the objective is. The counter makes me think I need to collect data, but I do not know how.
Besides that and the bugs, awesome game!