There were moments where I got in to the flow of things and it felt great, I can really see what you're aiming for.
The one bit that slowed me down was the having to pick up and fling items, which felt a bit of a chore - but I could just be doing it wrong. I think maybe it felt more limited because unlike this huge movement set, it was conversely more limited what can be done in other games, where you can pick up and hold on to an item?
The great range of movement you've built would seem to me more of a natural fit if the challenge was traversal rather than trying to shepherd a key across a level, if you know what I mean. Like, hit a button in an obscure place on screen, which you need to use your gymnastics to reach.
I really enjoyed it and I look forward to seeing what comes next!