A very interesting idea, all the models are really nice and I like the design of the main character and the enemies.
I'm not sure if this was just an issue I had but aside from the start there was no music or any sound effects during the game.
I played through all the levels but when I completed the last two wasn't taken back to the map and had to reset the browser to try another attempt. I'm assuming you just ran of time to implement everything you wanted.
Either way, nice work on the entry.