I loved the idea and the way it looks andplays is not bad at all.
I think the greatest touch must be the 'players' showing their emotion right before they dare and enter my deadzone.
It has a developing story which I am always fond of, but I never saw the end of it because the gameplay is so repetative. kill players, kill dummies, kill monsters rinse repeat. Get some item which doesn't change how the game feels it just boosts you a bit.
Not even the archievements got me continuing. So you got me excited, now try to maintain that excitement throughout the game