Great work!
It will help a lot to have some kind of minimap to keep track of the environment and cups, if you could. I finish it with 19 cups and really don't know if there are more.
The "Float / Discharge" it's more of a glide mechanic than a float one, a little water (coffee thing) to actually float at the beginning would be cool, it's really fun. but I assume you want to be clear that you fall slowly using it, and is a little subtle.