The moment the grenade went off, the other guard quickly charged in weapon raised high. At that moment a storm of rounds slammed into him knocking him off his feet, one round puncturing his helm splitting his skull and raining blood mixed with grey matter into the air. His death scream cut short when another two rounds whipped into his throat and the base of his neck. With a gurgling sound like a man drowning he went down. The other guard avoided a similar fate thanks to the fact his companion had served as an involuntary human shield. However he did not escape completely unscathed as a round punched into his shoulder spinning him away to his left. 

The shots had either been guided by the gods or damn lucky. The last few shots flew past Khazna, who had wisely stayed out of the direct path of the door. The bullets almost moved in slow motion to his eyes. He raised an eyebrow at the display. Turning back in time to see the last guard, now hugging the wall near the door, start spraying rounds back though the entrance in a blind fire. Seeking to avoid his comrade’s fate by staying behind cover. Whether the blind shots hit was another story. 

Khazna simply continued to watch on while the other three guards remained behind cover weapons at the ready.