Running Riot Medal (Halo 3)

The Running Riot Medal is awarded for a person killing 15 opponents in a row without dying.

Summary
This medal usually appears hand-in-hand with the Perfection Medal, but it is not required to get a Perfection Medal. It is available in all Multiplayer gametypes and has a Bungie difficulty rating of 8 (out of 10). This is represented by a silver 6-sided star with a purple target in the middle. When someone gets this medal the announcer will shout "Running Riot!" to the player that received this medal. In Halo 2, this medal was called Rampage.

A way to get this medal is to camp with a Shotgun, Energy Sword, Sniper Rifle, or other power weapon, and avoid enemies. When they advance, stay out of sight, and as they get closer, execute an ambush, assassinate them, or snipe them.