Hmmmm. I could not get past certain parts because I think it might be a bug, once you jump on a bouncy block it never re-triggers (or I could not get it to re-trigger) so I can't move forward after I miss aiming from a bouncy block unless I die. And it's already pretty hard! (I'm not so good at platformers). But I like the idea. The controls could be more smooth (it's hard to aim when jumping because pressing left/right goes so far so quickly).

I like the concept of getting energy from blocks to later use it elsewhere, a lot could be done with this idea. Sadly the possibilities where left unexplored and platforming took their place. This is my biggest gripe, because there is so much that could be done. I had no bigger problem with the controls, but they could be a bit sharper. Level 4 needs a "sign" to point player to the left, it took me few tries to realize where I should go.

This is very impressive for your first game. The controls and movement could use a little work. Also, it needs better level design. Otherwise, very good job.