Killtacular

The Killtacular Medal is awarded for killing 5 opponents within 4 seconds of each other.

Summary
It is available in all Multiplayer gametypes and has a Bungie difficulty rating of 8 (out of 10). It is represented by a silver circle with 5 purple stars. When a player gets this medal the announcer will shout "Killtacular!" to the player that received this medal. In Halo 2, this medal was called Kill Frenzy.

Getting this medal on a Mythic map will unlock the Killtacular achievement. An easy way to do this is to play Grifball on Sandbox.

It is the only multiplier medal which has the stars upside down.