Kill the Trogg leader, Grawmug, and his two guards, Gnasher and Brawler then report back to Captain Rugelfuss in the southern guard tower.
<name>, our scouts have identified the leader of this recent Trogg incursion. It appears that these beasts in Loch Modan are following the lead of a chieftain named Grawmug. Grawmug is heavily guarded, however. Two of his most elite guards, Gnasher and Brawler, never leave his side.
If you feel yourself worthy, <name>, I want you to lead the assassination mission on Grawmug and his two thugs. With the Trogg leadership dead, we just might stand a chance at pushing these beasts back into the ground.
Grawmug and his two guards, Gnasher and Brawler, are still alive. Your mission is not complete until all 3 have been brought to death. The Dwarven empire is counting on you, <name>.
Most excellent, <name>! You have brought hope to Loch Modan. With Grawmug dead, we stand a better chance of seeing the Troggs eliminated from the land.
Upon completion of this quest you will gain:
They can be found in a cave on the south-east side of Stonesplinter Valley. The three also attack together, so working in a group is implied. The cave entrance is at [35, 83] while Grawmug himself is at [34, 90] inside. Gnasher and Brawler are sometimes elsewhere in the cave, and not right next to Grawmug.