AI is getting stuck all the time. I just stopped this game on the third wave because they aren't interested in my totem.
Controls are a little too bulk and abrupt. Add a bit of smoothness and it'll be nice.
Sword's area of attack are too small to really aim. You need to rotate yourself to the left of enemy to attack.
Music is good, but starts to be annoying after some time. Would be a good idea to add settings to control it.
Also, don't add quit button to browser version. It's making players feel that something went wrong, because it's not really closing the game :)