Multi Kill

The Multi Kill medal is awarded for scoring three or more kills within 1.5 seconds. It is only available in Halo 3 Campaign. It is represented by a gold medal with a blue star that has another gold star in it. This is by far the hardest medal to achieve in the Halo 3 campaign. An easy way to get this medal is to kill a Prowler with a Spartan Laser or a Rocket Launcher, and doing this will also give you the Used Car Salesman Achievement. You can also get this by throwing a grenade into a tightly knit enemy group, as the explosion will kill at least 3 enemies. Another was is have the Grunt Birthday Party skull turned on, and use a Carbine or Battle Rifle to score a few headshots. Sticking a Grunt also works, as it will more than likely run near more members of it's team, getting you this and the Stick It! medal.