After accepting the contract, the assassination contract skull marker will appear on the map within a circular restricted area near the city wall over to the west of our position.
As you approach the target’s position, you’ll see a group of guards nearby asking questions about our target’s location. Enter the green zone and activate Eagle Vision to locate the target in the stalking zone nearby.
Once you have identified him, he will run off. Simply chase after him and shoot or tackle and assassinate him to end the contract.