I'm very happy you liked the mechanics :)
1 - Yes, the movements aren't as polished as I'd like; I discovered a bug very late and had to redo some things.
2 - Good analysis of the difficulty. Since I played several times and knew what I should do, I ended up finding it easy, hahaha, but with these observations I can improve, thank you :)
Regarding the enemies and power-ups: I had ideas for others and for improving those already implemented that weren't done in time. I liked the idea of the snail and the power-up; it really makes more sense. Those were definitely very useful tips!
Spoiler: There would be fireflies, and during the night in some scenarios, they would undergo changes between day and night.