The game looks good and the level design is quite varied.
Besides the obvious lack of music and sound, my main gripe is the jump height, it is way to big and it forces the player to make leaps of faith a lot. You could almost cut that height in two IMO.
You've got good ideas, keep up the good work!
Side note, try to make a web build for your next jam as people usually don't chance installing stuff on their computer.