Has anyone else played with this individual? I first played face off with him just now, 2 rounds, before quitting.
He seemed to be invincible. He survived various proximity mines and frag grenades that landed next to him, (he was not shielded by any architecture) and seemed unaffected by all pistol shots, even head shots.
Shooting with an M4 and Death-From-Above melee were the only means by which I was able to kill him.