What a great entry into this game Jam. I mean it's simple, but you have taken one of the most overused genres (side scrollers) and given it a new game dimension that refreshes the whole thing. I loved the "don't trust the shadows" premise. So good, so much you can do with that as a design/mechanic. I loved the music, super classic Nintendo-like.
Just so good, so much space here to work with to create a great game. Right now from where I'm standing you won this thing, this is my current favorite.