Use a layered squad. Two people sit in the mid‑level choke points, one in the upper platform with a long‑range scope. The mid‑level pair cover the tight corridors and keep the enemies’ eyes on the high spot. Every time the high player pushes or pulls, the mid‑level pair shift left or right to force a crossfire, then swing back. Keep a smoke or flash ready to clear the choke before the next rotation. Discipline the squad: stay in line, take turns pushing, and always have an escape route to a higher cover if the enemy pushes. That keeps pressure up, prevents flanks, and turns the vertical map into a constant kill zone.