The Metahuman sized Egg-Cutter.
One long hallway, empty. One frame construction with lots of monofilament wire hanging directly under the roof of that floor.
Let it rip drop, and you have cut anything that was in there into fine thin slices.
Basically, what the Red Queen did in Resident Evil, but instead of a Laser Grid going from side to side, it's a Monofilament-Grid coming down from the top.