Zergling Durability, A war on

At such a close range the sonic spikes from Virgil's rifle turned the zergling's head into hanging,
disjointed ground meat, nothing more than a putty of gore and teeth. But it didn't stop. The creature
kept coming and drove its talon down into Virgil's chest, cracking apart the CMC armor and ripping the
flesh underneath. Virgil screamed as the gun fell from his hand. The zergling was dying but was still
conscious enough to pull its talon back for another desperate strike.

That was when he acted, fighting back the darkness that was clawing at his consciousness from the loss
of blood. As the talon came in for a second slice, Virgil swung his fist right into what was left of the
zergling's face, smashing its teeth to bits and knocking it back. With every ounce of willpower he ever
had, Virgil thrust himself forward and punched again with the full automated power of the CMC behind
the swing, and again and again and again, until the creature stopped moving and he tumbled over to his
side, the world fading to black.

-A war on, pg 15