Talk to Fernund in Brightmarket to start this Errand. He wants you to find some trinket that he can’t reach, so it’s off into the jungle to find it. Head to the Dusk Mesa, then when you get there, climb up the wall of the cliff to where your waypoint marker is. Investigate the box to find it’s empty and to trigger a cutscene. Apparently you’ve been lead into a trap, woe for those who are trying. You can either kill or escape your attackers, it doesn’t make a difference in the Errand.
When you’ve either killed or escape them, head back the Brightmarket, find and confront Fernund. Make your choice on his fate and then that’s you finished.