I landed like 3 or 4 attacks holding ctrl with a bow until monster noticed and battle started. He losed all armor and a few hp.

http://imgur.com/a/OfVmk

that might be because the Royal Fire Slug and her minionss aren't actually monsters, but NPCs that want to talk to you?

Do they? ^^ Well its too late to talk to them now... Thx for reply.