Wow, really?
I'm sorry but you need to sort out the controls, and make the arena bigger. I couldn't turn around at all without not shooting, and not moving. Grenades were good, shooting was also good, as was the concept. However, the controls were awful.
The music didn't fit the game. It was okay, but next time use it for a Starwars game, where you have the power of rock, instead of the force...