After they killed several of the Assassins, they captured one alive and one ran away, as the sniper managed to sneak away, but Samiel knew that he wouldn't get that far because he sent Nefertari to finish him off.
Even though the sniper was Silver-Tier and Nefertari only a Bronze-Tier, she had her Level 3 Ultimate Ability Shadow Monarch, which was perfect for sneak assassinations. Of course, not only for assassinations but also for single combat, if used in the correct way, it was an Ultimate Ability for a certain reason.
Thus he left that one runner to Yvraine while he caught the souls of the deceased assassins and immediately stuffed them into his mouth, munching on them, as they were pretty tasty. That was not surprising as they were the souls of elite Silver-Tier Professionals, meaning their souls were relatively powerful and thus, their taste was much tastier.
[You have devoured the soul of Level 64 Silver-Tier Professional, Class: Assassin.]
