The winner is determined by which player has the most number of points at the end of the game. Score is determined by three different methods.
2 points are gained for every enemy kill, and lose a point for every loss on your side. It[s default as it provides a balance between your kills and losses.
1 point for every enemy kill. You losses don't matter any more, just make sure that you take as many lives as possible.
Start with 100 points and lose points as people in your territory die. Ideal for those who want to play a game that is based more on defence than offence.