2-2: Descent - Army of Two: The 40th Day
Move through the door down the hall and around the corner for a checkpoint save, and then head up the ramp here for a CS and tut on issuing orders to your A.I. Partner. You are then treated to another CS of two buildings coming down and some choppers in the air before control of your toon is returned.
At this point you and your partner will split up - you are about to take on a large number of enemies who are all over the place so just use the cover and carefully take out the enemy you encounter, giving priority to the RPG merc's as they can actually kill you pretty quickly.
Collect the Third Neko Cat
As you work your way down the shattered roof past the lit Chinese neon sign and then down further you approach where you re-enter the building. Before you enter stop and look up to the right to spot the next Cat (Neko Cat 3 of 12) for you to shoot.