A chapter Master in a straight up fight, then an inquisitor in a bar brawl, then finally, a metal robot without normal senses in a hall of mirrors? I think this Inquisitor really has it in for me Aun'O'Vader wasn't disgruntled as such, but the battles he was being drawn in seemed to be playing to the strengths of his opponents, it simply heightened his belief in the overall supremacy of The Greater Good that he had prevailed in his previous fights.
Nervous of a surprise attack, he couldn't even see the necron at the moment, Aun'O'Vader ordered his three shield drones to expand the boundary of their defensive perimeter, to try and give him more warning, the intelligence he had gleaned regarding this robot was that it was quite cumbersome and relatively slow, so it was unlikely to be able to get through his perimter without being intercepted.
He glanced aroun him then sent two gun drones on a searching patrol, one flew into a patch of inky blackness, simply hovering in the air, it's code vanished from his HUD, the drone had disappeared utterly. Aun'O'Vader sighed and ignited his honour blade, searching through the myriad reflections surrounding him. In front of him three necron overlords appeared, one facing away from him, obviously searching, two others quite obiously spotted him, one entered a defensive stance, the other charged.