Call of Duty 4: Modern Warfare/The Sins of the Father

Objectives

 * Locate enemy checkpoint.
 * Secure the Checkpoint.
 * Ambush the enemy convoy.
 * Hunt down and capture the son of Zakhaev.
 * Disarm and restrain Zakhaev's son.

Capture Enemy Checkpoint
Follow your team to the checkpoint and stand on the dumpster, whenever Captain Price tells you to shoot the guards, shoot them. A headshot is not necessary and the other guard will be alerted so try to kill them quickly.

Afterwards, you can let your team kill all the enemies or you can snipe a few yourself, after they are said to all be dead, swap your pistol for an MP5 and wait for the cutscene.

Pick up the G36C from the tower (swap if for your sniper rifle) and wait for Zakhaev's son's convoy to enter. A few troops will appear out of the vehicles, kill them with the G36C. After they are all dead, your tower will be run down.

Hunt down and capture the son of Zakhaev
When you get back up, follow the objective marker, when you get to a house, get out your MP5 and get ready to shoot a dog coming towards you. Afterwards, you will find yourself heading into a small village, go into the building to the right hand side and go through it until you come to a doorway and window on the other side. Take out the G36C and start attacking enemies through the window with it, as your team comes towards you and you kill most of the enemies, go out of the doorway and use the wall in front of you as cover. When you are told that Zakhaev's son has run, sprint to the side-alley to find him.