This game was made in 2007? I didn't realize how long the developer has been re-using the same music, UI, and concept. I think it's about time he give it a rest.
This is the worst game I've ever seen on Kongregate, and I've seen a lot of them. I don't understand what's been happening on this site lately, when games like this are getting badges.
I got stuck in the arena by myself with three minutes left after having made seven kills. That medium badge is impossible if no one else is playing the game.
I really hate these games that give advantages to people who have hundreds of dollars that they're dumb enough to throw away. Either give me a flash game for free, or make me pay $50 for a full-fledged game.
Maybe I'm being silly, but letting us change what gun we're using would have been helpful. Say, for the last level, when it's impossible to win with the close-range chainsaw.