Strictly speaking, Sheyan had already killed nine Awakeners!
If Chatichai had not killed Gullit before Sheyan could, there was no doubt that his kill count would have reached the double digits.
Such an achievement, on a battlefield no less, may not be unprecedented, but it was seriously shocking.
Having chased the enemies all the way here out of fury, Sheyan was already exhausted. He slowly walked back to the place where the rest of his party was located. Only now did he feel the numbness coursing through his body, and the fear. Looking back, those were ten Awakeners he had faced, not ten pigs waiting to be slaughtered! He had only done it because Mogensha's death had provoked him into launching a single-minded pursuit for revenge without a care for anything else. If his mind was still rational, he would probably not have done something so crazy.