'Hunulf speaks well and tempers his anger much better than I, but I am not my brother. If you are looking for a less violent task speak with him.
'Our people suffered an attack that cost many lives, and who knows how many more will be dead of starvation before the year is spent? The goblins must pay for this foul treachery.
'You carry yourself as one familiar with battle. Would you go to the ruins of Minas Eriol, southeast of this inn, and destroy the goblins you find there? The Eglain deserve vengeance.
Gadaric Munce, less tolerant than his brother Hunulf, desires that vengeance be visited upon the goblins who drove his people from the ruins of Minas Eriol, southeast of the Forsaken Inn.
Goblins slaughtered many of the Eglain, and Gadaric Munce wants to revisit these losses upon the evil creatures. He bade you go to the ruins where the attack took place and slay any goblins you find there.
2. Gadaric Munce is at the Forsaken Inn.
You found your prey within the ruins and dispatched them in kind, avenging those of the Eglain slain at the hands of the goblins. Gadaric Munce will wish to hear of your victory.
I've never seen more than one Thrasher spawn, and the respawn takes 3-5 minutes. He's way up on a platform against the mountain wall - almost in the center of the ruins, or at least the main goblin area. He's no harder than any other goblin in the area. He is a healer, so will heal himself or other goblins during the fight.