Outside the Military Archives, General Ouromov has captured Natalya! You must catch them. Look out into a small courtyard, and kill the two guys there. More men will come, so hide behind the wall, and wait for them to come. Don't worry about time, you have plenty of it. Run and hop in the tank. Crush any stragglers underneath the tank (Brutal!). At the first intersection, turn left. Go in-between the buildings. Kill any guards, and turn left. Kill any other guards, and go in the middle building on the right. Valentin will be in there. Talk with him, then run back to the tank. Valentin will get you 6 precious minutes to chase Ouromov and Natalya. Once in the tank, follow this course: go left, left, right, straight, right, left, straight, left, left, right, left, right, right, then go straight until the screen fades. Be careful to avoid mines, cars, and civilians. Now, on to the Depot!