Really nice game! I can see a lot of potential for more puzzles with the charge mechanic. Great graphics and I agree with a previous comment that the last level was super tough. I never really figured out how the two charge spots on the bottom floor of the climb in that level worked, but I managed to beat it anyway.
I think I did lighting in my own game exactly as you did in this one, so I'm a fan of that mechanic, too.
Overall, well made for 48 hours and I really didn't run into any issues, I noticed that I wouldn't stay in the exact spot on a moving tile when it changes directions, but it never caused me to fall off. Nice work.