This is a really beautiful short game. The theme interpretation and execution are definitely very creative. And I didn't mind the shader even in the web version; it does add to the overall aesthetics. 

I did find a collision bug with a first wall on the third level, the character keeps getting stuck unless you find a perfect spot before moving the platform (a level restart button would've been handy for that).

I thought the art style was cool. I do think it was a bit short, but I get game jams short time frame. Really interesting concept with the wind up toy aesthetic. I thought the only thing that really stood out to me was the gravity when going up. I didn't like much that you had to push it slowly or else the character would go flying. But I thought it was good besides that :)

Very cool! The visuals are inmaculate but i think that shader is a little bit too much. Very great game tho! :D i hope you make more levels in the future