Bullet fire riddled the incoming mining drones. The first crashed into the second, and the third was gunned down. In the distance, the elevator doors opened. A single figure in heavy cover aimed a long, familiar weapon.
A Gauss Rifle.
Vigil spotted the glint of the electronic scope just a split second before it fired up, directly at him. But it was already too late. Magma kicked and swirled from the wall. The mountain quaked. Your suits struggled, and you heard metal rend and tear as the force pressed you back, almost lifting you from the catwalk railing. [Gauss 107 vs Vigil Commando 52]
Vigil took the Gauss round into center mass. All that remained of his body stayed locked in chunks of his space suit as it was torn to shrapnel and blasted out through the roof, carried up, and away, kilometers into the air. Atmosphere rushed out through the hole propelling dust and debris, widening it in chunks, threatening to blow you upwards and out of the facility. The sudden change of pressure and sonic boom detonated the spilled soda cans. Your suits deafened the noise, but you felt your bones shake. Chunks of rock and boulders flew up and away from you, and sections of the rimward wall began to crash down. Sensor alarms chimed dissonantly as you detected a Castle Effect.... no, it wasn't shaped like one. No lashing tentacles, no incongruous shapes. The four dimensional object seemed to be providing some sort of barrier, protecting the tower, as Olympus Mons began to collapse around you.
Roll commando, everyone else, to make it to the safety of the stairs as boulders fly from one wall to another, and plumes of flame and splashing magma fly the other way. You may take -10 dicetype on this if you also wish to return fire. The figure in the elevator is preparing her next shot.