Set it as your current quest and head to Brightwood, following the golden trail to locate the shack which the farmer in this quest is meeting you at. He wants you to hunt down a notorious bandit that killed his wife, but rather than kill him in vengeance, you are to capture him and bring him to the farmer. Head off to the marked spot in the wilderness at Ripper's camp and take down the bandits. With them all defeated (not an easy feat, so use ranged attacks primarily) Ripper will unleash his fury on you. Pick whichever attacks you like, because as a lone enemy he's not too tough, and choose to either spare or kill him to get 30 good points or 20 corruption points.