Not bad for a first game. Has a few problems though:
I died and the re spawn didn't work.
Also the collision detection for the spinning arrow thing seems off.
The scaling is a little off. (about a ten pixel white border around the game on my browser.)
I gave it 4 stars because it was a first try. If you find yourself an art style, make a character, and get some sounds, you can turn this into a finished game. Can't wait to see what else you create.