This takes place near the beginning of the level, when you enter the first large room. In this room, go to the right side where you will notice 4 pillars standing closely together. You'll want to jump on the left pillar and then turn to face the middle of the room. Use your gun to shoot out the glass tube above, and then crouch-jump into the middle structure. Once inside the middle area, shoot out a window above, and crouch-jump two more times out on to the top level of this area. Once one the top floor area, you will find a floating holo-drone (looks like a plasma grenade) in one of the holes in the wall. There is no pillar near this hole, so you will have to use a well times plasma grenade jump to boost yourself up. Once inside this room, the achievement will unlock!