Perfection

Perfection is a medal awarded in Halo 3 Multiplayer for winning a slayer game with 15 kills or more without dying or betraying a teammate. It is represented by a black hexagon outlined in blue, which has another small blue hexagon in the middle. This medal can be obtained in Team Slayer or Social Slayer matches. One tactic is to camp and stay away from the enemies. When they advance stay out of sight then execute an ambush or assassinate. You can also try to perfect ranged attacks like sniping, or you can just play the game recklessly and hope you get 15 kills without dying. Camping and staying away from enemies can often result in lack of kills, but you are more likely to stay alive for the whole game, but still hence should be used carefully.