Now that you've offered to help him become the ruler of Algiers, Yusuf first has to remove his brothers, who are ahead of him in line for the throne. One of these is Tariq, and Yusuf would be quite happy to see him go. Talk to Tariq and convince him that the admiral wishes to negotiate with him for the release of the Corsairs. Then lure him into the jail, where he can be easily disposed of.
After talking to the Magistrate (or Town Boss), you can enter the jail mission instance right there in his office. Escort Tariq to the back of the jail, where some soldiers will be waiting for you. After exchanging some words with both Tariq and the officer on charge, the former will turn hostile (he is level 25). This completes the mission, even before Tariq is killed.
- Take Tariq to the Back Room
- Hand Tariq Over to the Guards
It is only necessary to have Threatening Posture ready to turn in, but not actually turn it in to complete it.