At a certain point, Amiri runs off to the Glebelon Uplands, where a battle between barbarians and Brevic army is bound to happen. Head there and aid in battle. Then go to the Six Bears Camp along with Amiri. Note that the old Six Bears Camp is now abandoned, so you will need to travel to a new one, at the southwest of Flintrock Grassland).
Listen to the ceremony, which results in Nilak becoming the chieftain instead of Akaya. Finally, you will be able to talk to Nilak and Amiri, and even give 1000 gold to the barbarians to earn some neutral good karma. This is the end of the quest.
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