This quest is not available in game.
Defender Mordun has tasked you with the execution of Ingvar the Plunderer who resides deep in Utgarde.
You are then to bring his head to Vice Admiral Keller.
Listen up, youngster. I've put down me share of these creatures - and your share too fer that matter. Here be what ya need to know....
The vrykul are fearless in a fight. Seems they actually yearn fer a death in battle. With their numbers and that ferocity, we're doomed - plain and simple.
There's one they esteem though, goes by the name of Ingvar. I dunno why they be seekin' his praise, but bring him down and you'll deal a mighty blow to their spirit.
Then, perhaps, we'll have a chance....