While strafe shooting from the hip wasn't the Long Beam Rifle's main point, at this range it wasn't a problem. The shot penetrated the shields of the hacking Dark Demon's rear, passed through the gap between the Fast Boosters and created a loud and sickening 'CRACK!' as it tore through the armor, internal systems and the Jimmy's backbone. The suit bent over backwards so far that one would think there was a very flexible Neko inside.
Because the other guard and the ones near General Storage were poor at lead-shooting, while they aimed at Viktor or Anselm who were the first of the file, most of the shots landed on the Sniper, dropping his shields by a surprising 80%. The barrage and shield distortions made it difficult for him to do anything else but continue on until he reached the safety of the corner.
Unlike Anselm's legs, his arms were in tip top shape. Bracing the HPAR, his suit managed the recoil well, the almost-plasmic coins easily overpowered the Armory Guard DD's shields and a number of shots were evenly distributed all over its body and some parts of the armory door. It was heavily damaged, but still had the ability to continue spraying the marines with laserfire.
Viktor's twin burst broke one of the General Storage DD's shields and made two deep black spots on its chestplate. It was fortunate that the greenhorn's few and controlled shots did not miss to damage the wall behind. Seemingly pissed, the Dark Demon started its hydraulic flaps to launch its micro-missiles but not before Talbain bought his lumbering suit right up to its face. With extreme shield strength and no opposing shields to conflict with, his shield bubble pushed and nearly crushed the DD against the wall. This was before the ID-SOLs nanomuscle enhanced arms did the actual crushing.
Fian was less fortunate. Desperate fire from his intended General Storage target dropped his relatively thin shields to zero and a red beam made a neat scorch mark on his shoulder. However thanks to intelligent design by the dudes at NAM, this thin shielding quickly restored the bubble in a blink of an eye, allowing it to collide, merge and nullify the DD's own shields allowing the Master Chief to bring his Broadsword down with minimal resistance save the little bit of armor covering the DD's head.
The sole surviving but heavily damaged DD seeing that its situation was hopeless, opened up an Alpha strike at its nearest target, sending the biggest possible micro-missile cloud plus one grenade at Fian. If these explosives miss the Master Chief undetonated, it might endanger the hostages inside the storage room.