Killing Frenzy

Were you looking for the Killing Frenzy achievement, or the Halo 2'' medal of the same name ?

The Killing Frenzy medal (known as Running Riot in Halo 2) is a multiplayer and Spartan Ops medal awarded for killing 10 opponents in a row without dying. In campaign and Firefight it is awarded for killing 20 enemies in a row without dying. In Halo: Spartan Assault and Halo: Spartan Strike the medal is awarded for killing six enemies in a row without being hit.

The medal is represented by a bronze 5-sided star with a green target in the middle. In Spartan Assault and Spartan Strike it is represented by a stylized shield. When a player earns this medal the announcer will shout "Killing Frenzy!".

Trivia

 * In Halo: Combat Evolved, because there are no medals, if you kill ten opponents in a row without dying, you will still hear the announcer, and see "Running Riot!" in the upper right corner.
 * Strangely, in Halo 3 this medal does not show up immediately after one gets the 10th kill in a row. Instead, they need to wait for approximately 3 seconds before the medal and announcement appear. As a result it is one of the most glitched Halo 3 medals, along with Splatter Spree.
 * Earning this medal in a Halo 2 Vista multiplayer game unlocks the Running Riot achievement.
 * Earning this medal in a Halo 3 ranked free-for-all playlist will unlock the Killing Frenzy achievement.