Really polished, well done. I made it to the end (in the window) and submitted my score (time I'm guessing) but wasn't good enough to make the top 5. Perhaps more could be shown? :)
Some part of the platforming were frustrating, but its going to be tough because this not a common movement style. Maybe not instantly returning to the start of a level would be an idea.. hard to know.
I think it's really unique to have a platform game with no jump or hook shot mechanic. Bouncing on the yellow parts was particularly clever I thought.
Overall super polished and great submission, well done!