"On the surface, it’s a third-person team deathmatch, but with the fine tuning Metal Gear has become known for, it becomes a lot more than that. Naturally, there’s the basic idea that killing people who aren’t on your team is a good thing to do. Verily. If you find yourself in a tight spot without time to be tactical, yes, indeed, shoot the bad guys and hope you get ‘em, because that’s good for your team.
"But a kill puts a bounty on your head; it makes you worth more to the other team. You’ll become a higher priority target, because if someone kills you, his/her team reaps greater reward. So that sounds like getting punished for being too awesome, right? But shut up, I’m not done." -PSLS