Once you have grabbed the pigeon to begin the intercept, the target can be found standing on the cliff top overlooking the ocean at the base of the lighthouse (the building with the viewpoint on it).
In this intercept, we’ll need to find and kill six attackers. As is the case for these missions, the locations can vary due to the assassins moving towards the target over time. Fortunately most of the attackers in this instance are found in groups of 2-3 so once located, they can be taken down quite quickly. They are usually in the following general areas:
The target is located on a cliff overlooking the ocean (left). Three assassins can be found outside the tavern (right).
Killing all of the assassins within the time limit will complete the intercept sequence with a 200 L bonus. If you can’t manage to do so, stick close to your ally and kill the enemies as they approach him.