I can definitely see the beginnings of a neat game here, but I'm guessing you ran out of time to do all that you wanted with it. My only real complaints are that I couldn't see my health remaining and that the music stopped playing after a short while. Aside from that it just needed a bit more content, I think.
I do like the concept of having two sides, and which you pick changes what empowerment they each get. I assume the enemy power-ups were cumulative (or meant to be), but it was hard to tell because if you just spammed attack speed and damage they couldn't really do much lol