Player-controlled variables in a game like this is an interesting idea. One particular section was getting frustrating with a bunch of narrow jumps between spikes, so I just cranked the player speed to max and jumped through all of them in one go. That was fun. Haha
Physics felt a little wonky, with how you'd stick to walls and they would kill your vertical momentum. Also, I got used to it partway through, but it would feel a lot better to play if you could adjust the variables with keyboard inputs.
Criticisms aside, I definitely enjoyed it and refused to put it down until I reached the end. Finished with 68 deaths. :)