Interesting choice. I agree with some other comments that more variety could help, maybe even a different platform every time you come back. Of course that would have been madness to do during a gamejam so let's call it future work XD
I had a little trouble with the controls in the platforming parts, where I moved way too fast, so you might want to tighten them up a bit. (might be just me sucking, fair warning XD)