I like the idea of a little adventure game, and the music, story etc. fits that. Moving around obstacles by going back into the previous area and going round them was neat.
I found the jumping mechanic a little tricky because of the perspective. You don't really get height when you jump, so it could be like a roll or something instead. I also think the game pace is a little slow.
I think more animation and effects would make the art more dynamic and gratifying to engage with.