Now here's some tactical depth +1
about the orange guys: they planned to go through the closed branches of the cave to the rear of the purple ones, and when they met the mechs, they were already prepared to die from the collapse, but the mechs pointed their guns at them and not at the ceiling of the cave (also an important thing: people will probably die from dust during a collapse even meters away from them, but the mechs will not, but they are forbidden to collapse the cave)