Hi there, awesome game!
It seems like you and I had the same idea, but very different executions.
I ended up getting stuck on level 7 (not the most skilled player), so I can't give optimal feedback. I guess I can at least say that the difficulty was a little high for a jam game.
Regarding controls, I found it weird that when you turn around the screen moves a lot. I'm guessing it's an engine thing. Very mindful to include other control schemes, something a lot of the other games I played lacked. They felt just right!
I felt like the levels were too long. I would often die early in the level and having to play parts of the level you already know about just feel like a waste of time.
Amazing artwork! It's simple but it fits very well. I like how the player's outline changes in dark to contrast the background.
Amazing job! The best game I played so far.