I can understand the idea behind the game but i don't really able to understand how to play it. I wasn't even able to pass the starting spikes of 2nd level. I tried all the hats too but still couldn't. Maybe some simple tutorial level would be helpful in the beginning to make the player understand about those hats or some description about each hat will be helpful too.
Other than that i liked the simple environment and the player design it looks cute. But anyway, good effort i would say.