"I will now give you your first assignment. Relax. It's an easy one. Kill the local opuds. They're a species of Pantera in this area. Slay the opuds and I'll reward you with a new weapon. You can attack enemies by left-clicking on them and pressing the '1' key, or simply double-clicking them."
After accepting the quest, kill Opuds in the surrounding area. Once enough have been killed, return to Guide Arocel.
"You're not as dumb as you look. Here is your weapon as promised. Let me tell you about collecting items before we move on."