This level is fairly easy. You start in a room, unarmed, and guarded by two men. Walk up to the first man, and chop him. Then, next over and press right up against the second man, and he won't be able to hit you. Chop him, then exit the room. You'll see a soldier start to take aim at you. Run over next to him and chop him. Go back to the first room, and open the door in front of the first room. You'll see lots of boxes. Go on your left, and chop the guy there. Then, go across the room. Climb up the stairs, then open the door. Run out into the hallway, then run back. A guy with two Klobbs should come. Chop him, then go out into the hallway, and turn left. Chop the guy there, but keep behind the boxes. Then, run across the hallway, and chop that guy. Now, walk down the main hallway. Switch to your KF7. Open the door, and balst the three guys inside. Turn around, and head down the hallway. Switch to your Klobbs, and shoot the guy next to the door. Then, go to the back of the bookshelves. Chop the guy there. Then, go through the double doors across then room. Open the door, and chop the guy standing next to the hole on the floor. Go all the way across the room, and chop the guy there. Then, head for the small, single door in the middle. Open, and you'll see Natalya. Quickly hide to the side, and wait for Natalya to come. Then, switch to your KF7, and kill the two guys inside the room. Go to where you killed the a man by the double doors, and open the doors. Go down the stairs. Head past the tables, and go in the door. Take a quick left, and the a right. There may be a man walking around here, so kill him with your KF7. Turn to the right, and open the door. You'll see Mishkin. Talk to him, and he'll tell that they have found out that Ouromov, now a General, is the traitor. Mishkin will give you a key. Open the safe, and get the black box (even though it's orange, it's called a black box). Turn around, and exit the way you came. When you get the to second door, you'll see large windows on your right. Blast them, and go through them. You've escaped the military archives.