Secret Service

Beat the first chapter on either agent or POTUS difficulty. These are the two “tougher” difficulties, but they shouldn’t present any problem for you. During the first part, you learn the controls and escort the president to the monument. After that, you are ambushed and must kill off the terrorists charging the monument. After that, you will escort the president outside (be sure to stay close to him or you will fail the mission) and witness the evacuation chopper being blown out of the sky. Go around the area taking out RPG gunners and return to the monument. You will notice that they are under attack again. Fight off the 4 or so guys inside and head towards the president. This will end the chapter and you will get the achievement!