Heart pounding. Terror in your soldier's voice as bullets crack by. A mortar explosion deafens you with temporary ringing. A smoke grenade covers the street, so you sprint across as you pray. You make it inside the objective just in time to see a grenade roll into the room... your teammate goes prone on it in an act of sacrifice. The shrapnel is contained, and he lays dead in a pool of blood and a severed arm. You frantically shoot through the nearby wall and hear a scream, then a body falls clutching his wounds. You put another round in his head; he is still.
An armored truck rolls down the street pelting the room with .50 cal rounds, slicing through the walls like butter. You watch as your teammate's head explodes in a red mist. The end is near, but a friendly A10 strafe run hits the street, destroying the truck in a big fireball.
Just another game of Insurgency. 500 hours in, and it is still perfection.