The whole game felt very polished, the art and sound design very coherent and at a very high quality. I loved how the music changed between characters and how everything just fits together really well. Also being able to play in web is always a good thing.
My biggest issue with the game were that the controls did not feel very fluid/responsive, I dont know what exactly it is but I had a hard time controlling the character the way I wanted to. It would have also been nice to have a volume slider in the options instead of just being able to turn sound on or off.
Im also not too sure about the implementation of the theme - was the point that the two characters have a different scale?
Aside from those minor things the game seemed to be at a very high quality and I had a fun time. Great job! :)