Killimanjaro

From Halopedia, the Halo wiki

Summary

Killimanjaro Medal.gif

The Killimanjaro Medal (Kilimanjaro, Killimonjaro) is awarded for killing 7 opponents within 4 seconds of each other. If you were to get one barely under the time requirements, you would have to get 7 kills in just under half a minute. It is available in all Multiplayer gametypes and is assumed to have a Bungie difficulty rating of 10 (out of 10) since the Killtrocity Medal has a difficulty rating of 9 (out of 10). It is represented by a platinum medal with 7 stars. This medal is seen very rarely, and most often in custom gametypes. Bungie has released no information on this medal so an image had to be lifted from a set of post game stats.