I'm a sucker for this kind of 2d but 3d style. I'd love to see more of this game. (I've always wanted to make something like this game too!) I feel like this game would feel really good on a controller too.
I appreciate the movement and how fast you can go in this game. It certainly appeals to my inner speedrunner. I do think this game is a little too hard for a game jam. You're required to have great control of the mechanics for some of the jumps and it might not be too intuitive to the inexperienced. One of the switches above spikes and across a line of projectiles in the last level comes to mind being particularly difficult. I wish the slide had a dedicated button too. These are all minor things to an otherwise great entry that I enjoyed playing a lot. I might have to try a speedrun or two!
Great job! One of my favourite games I've played this jam.