Knights of Tezoth

-- That was quite the spectacle, as if a cunning retiarius, a hero of the brutal arenas of the ancient East, had ensnared and bound the movements of a heavyweight murmillo fighter. Fortunately, the capital's physicians are skilled, and Mordred only grew more fervent from the pain inflicted by the arrows.
Having answered thus, Ambrose steps out for the next bout. And a voice, familiar since his coming of age, when his grandfather, on the occasion of his entry into adulthood, implanted a magatama in his ear — one of the many treasures of his lineage — once again disturbs the knight's mind with an otherworldly tone, audible only to him. Ambrose had always chalked up this foreign presence to his own excessive sensitivity — the very same he had recently waxed eloquent about before Deus — but at times, like now, this voice screamed so loudly that it was a wonder no one else heard it.
"What a disgrace! Lost to a girl. A big strapping lad, twice as strong. I've never suffered defeat at a woman's hands in my life... Now atone for your mistake, maim this sneaky-faced one. Better yet, cut off his head and put it on a pike. In the desert custom."
"That shall not come to pass today," Ambrose replied mentally, but arguing with the fierce spirit was, as always, of little use.
"Weakling. Worthy men have killed for less. I don't like him. Neither do you. You want to win. So do I, for I was not granted that in my time. Listen to me and obey. Use the deadly strike. The Deadly Strike! THE DEADLY STRIKE!!!"
And Ambrose uses it, the fury of the ancients fills him, the cruelty of the unknown spirit guides his hand — the tip of "Dominus" drives straight for the opponent's neck, piercing and rending metal, cloth, skin, and flesh. Pleasant gurgling sounds. Ambrose did not hold back his horse from trampling the fallen foe with its hooves.
"Well, that's just splendid. I am pleased." — the evil spirit fell silent for a time.
-- I am no stranger to unbridled violence either, and I am not ashamed to admit it.

Man, there's some serious mental issues here. Based on the questline, it all seemed softer

No issues at all, you just had to participate in the obelisks...