For the first part, you have to close the distance and catch up with Faraz. As you catch up to him, the first batch of his guards will engage you. Take cover and eliminate them.
Continue your pursuit deeper in his compound and eliminate all hostile forces along the way. Take note that these guys wield high-powered rifles as well so don't expect to survive very long if you keep taking damage. The path is very straightforward so don't afraid about getting lost. Take your time eliminating the targets as Faraz will only move once you get near. Follow him until you reach a dead end past the wide, open area of the compound. Turn left and go through some broken walls until you see him again.
Give chase and take out more targets. He'll eventually cross a wooden bridge to the next area. Be careful as you move since there are tangos inside the guard house along the way. Head to the next area to find a heavily guarded entrance. Dig in and eliminate more targets. Once done, position by the door to proceed.
Continue inside the main compound and clear all enemies before moving forth. Be careful of the ones who appear by the rooftop. If Faraz starts to escape as you slowly proceed, don't give chase immediately; stay in cover and continue taking out more enemies. Continue your pursuit through the narrow alley. Take out the guy in the technical then fight your way through the gate to the next area.
Pursue him along the straightforward passageway. There are more enemies here as well so carefully proceed and take them out as necessary. Continue and take out the last remainder of his forces and catch up to him as he attempts to climb over the wall.
In the next phase, you have to get to the marked building as fast as you can. After reaching the slope leading to the building, take cover as there are more enemies waiting inside. Clear them out then enter the building. Breach the next door to complete the mission.