Troll Island
From RoR Wiki
Troll island is a Public Quest in the Badlands. It´s located on an island in the river.
"The scraping of Troll Claws and the guttural roar of Orcs can b heard echoing from inside a nearby cave. Deep inside the cave, Orc Breakas are inciting the River Trolls into a frenzy and plan to unleash them on the Oathbreaker camp.
Skaf Copperstone is no beardling and he´s anticipated the tactic. Gathering a small warband, Copperstone and his men will wipe out the Trolls and take the cave by force if necessary."
The first step of the quest requires killing Feral Trolls and Bloody Sun Orcs. The second to kill Bloody Sun Big Breakas and Enraged Broken Trolls. At the end the goblin shaman Gizbo da Wize and his pet troll Gnasher must be killed.