Quite a nice game!
I loved the concept. Worked on a similar idea some time before, but your execution is much better! Art, music and sfx work great together, and overall it played like a solid game.
Visibility-wise, I'd prefere area of view right after picking up a battery to be larger, because there are a lot of jumps that go out of it. It would be nicer to see them ahead and at least memorise where are you going.
I did run into some bugs: from time to time D and Space keys suddenly stopped working, whitch made it impossiple do go right and up respectively, so I couldn't get past lvl 3. If it ever gets fixed, would love to finish the game!