Though I have the aforementioned quest in my journal, and have killed every snake, warrior, tiger, etc in the correct area, I cannot seem to get credit for killing the NPC’s. I have asked other players who have completed the quest to confirm i’m defeating the correct monsters, but it hasn’t helped me complete this yet. I also tried returning to Sicilus in case it was just not showing completion, to no avail. When I picked up the quest it was a week ago or longer, and about 5 levels.
I wish I could recall more of the conditions upon picking up the quest, but it was a while ago and I just carried on and left it on the backburner.