"A group of outlaws is responsible for a rash of violence and mayhem in the city. They often congregate in the swamps just outside the city. Kill their leader and end their attacks."
Location
Walkthrough
Head to the Viewpoint/Fast Travel location and synchronize with it if you haven't already. This makes for a fine starting point for this hunt. Immediately turn around and hit the sentry. After that locate your target below you, a Brute. Wait for the Berserk dart to wear off and kill him. If you are quick enough, an aerial assassination is an option.. Be sure to take a moment to deal with that scout you tagged with a dart not long ago too.
