Really great movement and music, I can totally see what you're going for here.
Next steps I think would be to add some more feed back with the different weapons so that what's happening reads a little bit more clear. When I threw the potion thing in particular, it wasn't at all clear if it was doing anything. Either some FX, or sound feedback would be much appreciated.
It's a real pity you had troubles with your team. This has some seriously excellent potential. Like I said, the movement feels excellent and fast. I'm real impressed that you got it working so smooth in a web browser.