Mohor tells you, "If there's a more dangerous Guruk than the Guruk Fiend I don't know of it. They are more cunning than the average Guruk and stronger too. They've been trying to get into our town's caverns ever since Torgluuk passed through. Go and kill 30 of the cunning fiends lurking in the lower Southern Catacombs and I'll reward you for your help."
Mohor tells you, "By the fungal roots, you humans can hunt better than anyone I've ever seen! Maybe you can stay around for awhile. Here's your reward."
You've earned 70,000,000 experience.
Mohor tells you, "You will be forever remembered as a "Fiendish Huntsman"."
Mohor tells you, "After seeing you hunt down those Guruk I'm not sure who's more fiendish you or them! You've certainly made them think twice about threatening our town. Come back in a couple of weeks though, they may decide that it's safe to start their fiendish schemes again."
Notes
During the Reforging the Past event, the quest timer was standardized to 13 Days (originally 14).