This was quite fun! It took me a while to realize I could move my character at first. I was wondering how to hit the people coming at me from the left and I was clicking there but it didn't work. Once I realized I could move, the game became much more fun.
I played on the easiest difficulty, and I could sweep left and right and stay at full health. I went to over 10k points and gave up, but it was fun! I then tried the next difficulty and didn't last very long. I also played the blackout mode and that was pretty fun too.
Overall, great job, I think the concept is pretty cool. Echo-ing Hythrain, I'm not sure how this is fighting, but the gameplay itself is fun.