Seems like you nailed the physics in this one. No wonder you spent long getting the mechanincs right, they were very satisfying and intuitive! I especially enjoyed the trampoline mechanic, but I am greatful for the checkpoint beforehand cause this was the hardest part for me:P
I hope you finish the project like you mentioned, I think it can become a really cool game! I think there is a lot to explore further in the mechanincs department as well. For example moving platforms with obstacles coming at you that creates a sense of urgency. The sky's the limit, cause this is a very solid base!
BTW, here's my score. Who can beat it?