As you begin this mission, we will need to tail the target marked with the orange objective marker a short way down the street. Hit Eagle vision to tag him and follow. He will walk straight past a group of dancers, so hire them and follow behind him at a slow pace, using the dancer group as cover. Continue to follow the guards until they enter the restricted area compound.
Now that the tailing sequence is over, we need to infiltrate the compound, locate the target and assassinate him. If you take a quick look at your map you will notice that there are three green circles in the compound indicating potential locations of the assassination target.
Each time I played this mission, the target appeared in the same place – the north-eastern corner of the restricted area. Run over to this area outside of the wall and enter the open (and strangely unguarded) gate on the eastern wall close to the northernmost point of the restricted area.
At this point; get into cover behind the corner so that you can look inside the compound and activate Eagle Vision to identify the target.
Now from cover, equip your pistol and line up a headshot on the assassination target. Shoot him for a scene. After the scene has run its course, exit the compound and escape the area. Find a hiding spot and when it is all clear the mission will be complete.