I loved playing this game. Brilliant with the storytelling. I wanted to know what the next picture would show and that kept me going. Liked the sound effects, the hair of the hero when jumping and that camera perspective movement. Nice! I ran into a small bug with sound effects becoming very delayed in the later levels. No sound would play at all when something happened and then I would get all the sounds later on in one mess (Firefox/Mac). But well.. I loved playing this game! Great work.
Edit: The boss: I would have some kind of a powerbar showing when he is hit. I spent a while hitting him with the sword, not really knowing if that made any difference or not (until I figured out that it didnt)