I really love a lot about this game: The great feeling of momentum from flying up a waterfall or landing in a pool after a pit, the general environmental aesthetic, the water/soap look and mechanics.
The only things that could be improved in my eyes:
1. It is fairly difficult, so the progress losses hurt.
2. It's really hard at some points to get back your momentum for critical jumps without it taking a long time.
3. The enemies seem somewhat erratic, it can be hard to dodge them falling from a high jump.