1) As soon as you start run up to the guard on the right and chop him and then turn your gun on and shoot the guy on your left.
2) Run out the door and turn right. Shoot the guy at the bottom of the stairs and then run up the stairs. Once your up the stairs shoot the guy there and turn right and then left. Run down the hall and open the door.
3) After you go through the door turn left and run for the door on the wall infront of you. (Hint: Let the guy by the door shoot you. It will speed you up and save you a few seconds. Health is not a problem.) Once you get through the door turn right and then left after you get past the bookshelf. Run to where Natalya is kept.
4) Open the door to where Natalya is kept but don't go in just turn around and run to your left.
5) Turn right and you will see a guy by a double door. Shoot the guy, open the door, and run down the stairs. After your down the stairs run to the door on the wall to your right. Go in and turn right. Run in to the door infront of you and then turn right and open that door.
6) You will see Mishkin. Talk to him. While he is talking get in a position to open the safe get what's inside and run. Once he gives you the key open the safe, get the flight recorder, and turn around and run out the other door.
7) Turn left and then left again. Run down the hall and open the door. Turn right, shoot the glass window, and jump out.