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 prefect ranged attacks like sniping, or you can just play the game wrecklessly and hope you get 15 kills without dying, because camping and staying away from enemies does not always give out the most kills unless you can really get the attention of the other team, but this will risk you to a 'mob' attack, risking losing a perfection opportunity.