Great game! I like the way you incorporate the rain into the mechanics, making the area slippery.
Though having a texted instruction on the tricks would be better, after seeing so much of my friends trying out this game and quitting on the first level. None of them figured that you can jump while sliding on the platform.
After discovering this mechanic, this game became pretty fun for me, opening up new ways for me to pass the level.
The art is cute, consistent, looks very finished, though it feels pretty generic. I feel like there could be more fantasy and mythical element in it.
The audio design could be better though, especially the bgm. All it has is rain sound, and it gets pretty grating on my ears listening to it.
Overall, great game and good job!