Really liked the pixel art in this game. The lighting mechanic was interesting. I also liked that there was a boss fight at the end. I beat the boss but wasn't exactly sure how that worked.
SPOILER
I thought lighting up all the bulbs made the boss vulnerable, but there were times the boss just seemed to fall down on its own.
END SPOILER
My biggest suggestion would be to tighten up the controls. When it comes to platforming games, loose controls just makes for a frustrating experience. Other than that, good job.