Slay 4 Rageroar Lieutenants and acquire Rageroar's Helm by killing Karga Rageroar.
I have encountered the Rageroar clan before, <name>. They are led not by an orc, but by a monster - a war-gorged fiend without a shred of decency or compassion. He and his lieutenants must be killed, not just to save Northwatch, but for the good of all of Azeroth.
Karga Rageroar wears a helm. Execute him, <class>, and bring the helm to me. It is of ... particular importance.
Rageroar has made his camp across the chasm, east of here.