How to Earn the "Two Corpses in One Grave" achievement in Halo Reach for the Xbox 360

Two Corpses in One Grave is a difficult achievement in Halo: Reach if you don't know where to look on mission 3. You will have your chance right after you acquire the Target Locator when two Wraiths show up for the killing! Just be sure to aim straight and true and you will be alright!