Easy A.C.E.S. points on "Ambush"
-In the mission "Ambush", get to the end where you need to order one of your teammates to defuse the bomb. Order him to do that and stand beside him. He will complain about you standing next to you. Have your other person regroup and tell him to throw a grenade at the door in front of the bomb. You should get two kills. Next, look above you to see a person about to go on the turret. If you kill him, he keeps respawing. This is an easy way to boost your Assault points or any other desired A.C.E.S. points. Note: You will get more A.C.E.S. points under the Realistic difficulty setting.