I had a lot of fun with this game! I got to level 10. The controls are intuitive and felt responsive, and the puzzles are well designed and melded really well with the platforming and speed-running angle. I usually am terrible with platformers, but having more control over the timing of the jumps made it easier for me to get really into it.
I love how you built in a challenge medal into each level. I was tempted to replay levels just to try getting them. Overall, this is really a fantastic entry, and one of the most fun games I've played in the jam so far (and that's saying something, since I usually don't like platformers haha).