Skewer Stopper

Skewer Stopper is an achievement in Halo 2 Vista. It is worth 20 Gamerpoints and is awarded for killing a player with an Energy Sword after they kill 5 or more enemies in a row with the sword.

Its symbol is similar to the Counterpoint achievement, except that the sword is broken into a total of seven parts.

7 Referance
The fact that the sword is broken into 7 pieces is another referance to the number 7, by Bungie.