Art's pretty good, and the dialog was quite funny. I also liked the idea of enemies and platforms only being solid in one dimension or another. Plot's also pretty interesting, like a twisted take on the concept of the book Good Omens.
The dimension-swapping platforming segments seemed a little easy because of the long swapping animation that pauses you in mid air, though, and the boss could've benefited from a more zoomed out camera.
Other than that, though, the game's great and I had a bit of fun with it.