Hello.
Interesting concepts, quite challenging at times, I am more a fan of fast paced games, but this is personal preference. Art is simple but charming.
I noticed that jumping is taking away all horizontal momentum often times, could be a deliberate design choice, but I thought it would be more intuitive if the momentum was kept. Also, it is possible to go left and right with A and D, so it would be nice to be able to jump with W too for example.
Good luck for the jam!