Death from Above

Death from Above is an achievement in Halo 5: Guardians, awarded for killing a Grunt and smashing a grate with a Ground Pound in Battle of Sunaion.

Strategy
While possible on any difficulty, it is best done on Easy or Normal. Head into the room that has a circular grate on the bottom floor and a staircase to the right of it. The room should be filled with a few Grunts.

Climb up the staircase and wait until a Grunt gets very close to the grate, then jump and do a Ground Pound on the grate. If the grate breaks and the Grunt dies, the achievement is then unlocked.