Establish the Luxon Settlement

Overview
Summary
 * 1) Travel to the Luxon Settlement and eliminate Smuush Fatfist and his cronies.
 * 2) See Lionguard Neiro for your reward.

Obtained From
 * Lionguard Neiro in Lion's Arch

Reward
 * 2,500 XP
 * 250 Luxon Faction

Dialogue
 * "I just received word that the Luxons are having a difficult time establishing their refugee camp. A particularly troublesome ettin named Smuush Fatfist and his cohorts have moved into the area and decided it is to be their new home. As you can imagine, the Luxons are not particularly excited about their new neighbors. Would you head over to the Luxon Settlement and get rid of those unruly ettins?"

Walkthrough
Pretty straightforward. Go where the compass directs you and eliminate all the ettins.

If attempting to finish this quest with henchmen, you might find it easier to start from Bergen Hot Springs or Beetletun (level 12 henchmen), or perhaps even Temple of the Ages (level 15 henchmen, and party size of 8).

It seems if you have the quest "Defend North Kryta Province", this quest is undoable.