Double Cross & Revenge

This quest is given by Ariana in the jail cell in the Wailing Caves, you must have completed the Search For Ariana quest.

She says the deal with the orcs to not invade the nomads if she stayed in the caves as their prisoner was a lie. They are about to attack the nomad camp.

She asks you to kill Advisor Kre'lak (-63, -39, -55) to slow them down and then to warn her husband Orwen Neovra in the nomad camp, in the Commonlands.