A very good idea and well done. It is too hard for a jam game in my opinion, the first levels at least should be easier.
The only real complaint I have are the controls. Why not W for jumping? Then you could keep your hand on the mouse and everything would be smoother.
Also I would suggest to mark your last position (or let the player mark it), so that you can improve your plan instead of guessing at what pixel you might have been. Also the trajectory (or only this) would help a lot and would make it more puzzle-like.