The main game mechanics feel quite polished - the visuals, effects, and audio add quite a bit to the overall experience. I got stuck on the fourth level and couldn't figure out how to progress, but that maybe just a me issue.
I did find two bugs, I paused the game it didn't pause the actual game but the pause menu popped up, and when I un-paused the game the game paused itself, so I could only play the game when the pause menu was open (This happened only once for me). Also the death counter at the death screen showing the different ways you can die bugged out for me and started to only display 0.
Overall loved the concept, a very nice puzzle game which ties with the narrative!