What I liked:
Level design was good
Visuals and sound design was clean
Mechanic is intersting and fun
What frustrated me:
For how fast-paced the game is, platforms and animations (the success/fail screen and pickup animations) felt oddly slow and annoying
Lack of suicide button if I know I missed the cycle in platform-based levels
(Not gonna mention missing explanation for stuff like the click&drag platforms, since it's obviously just born from time constraints)
Overall, very solid game for 3 days, good job!