Quite nice, the graphics are decent, and the mechanics work nicely. The music gaining more layers as you progress is a very nice touch.
Admittedly it was a bit awkward at first cuz i was using WASD and had to hold Z to pull the companion closer but then realised i can use arrow keys. Also the lack of any sort of death animation on contact with spikes is a bit jarring but eh.
Overall quite a good job!