First I'll preface by saying that the controls feel responsive and I really enjoyed the proc gen areas even though sometimes I got trapped with no escape or way to die :D
A few suggestions to improve. I would suggest making the collision for the spikes a little smaller. A lot of times you want to lean in favor of the player so it doesn't feel like you're getting punished for playing the game. A lot of times I could have sworn I didn't touch the spikes but because I touched 1 pixel I would die.
The second thing which I'm sure you know is the menu does not work to click with the mouse. I could only hit enter to progress it and could not get to the about or controls.
One other thing which I already mentioned is fixing some of the proc gen. I got dropped on spikes starting out a lot and kept getting dead ends from falling with no other way to go. I also had spikes spawn in walls sometimes.
Overall good job with the gameplay and I enjoyed the music!