Objective 3: (4)

Return past the hallway and down the stairs to the facility entrance.

Go north to the previously locked door and eliminate the three guards inside.

Walk down the hallway, passing doorways, until you reach an open door leading to another hallway.

Go around the corner and defeat the two guards who tend to take cover (press the cover button to crouch behind walls or objects) (using obstacles for protection) at the corner.

Proceed around the next corner and shoot the guard.

Continue down the hallway to a door; the game will checkpoint (an auto-save point you restart from on death) (save your progress).

Open the door, switch to your sniper rifle, and kill the two guards directly in front of you.

Look northeast and eliminate the dog and soldier.

Walk northeast and follow the road until you reach a turn.

Sidestep north and shoot the guard.

Defeat the guard who appears from the southeast and the three guards who appear from the northeast.

Return northeast to the road.

Turn west and approach the wood boxes.

Walk on the left side of the wood boxes and kill the patrolling guard.

Walk west to the mounted MG42 (a heavy machine gun).

Man the MG42 and eliminate all approaching soldiers and dogs.

Take out the soldier on the distant house with two red chimneys; aim near the chimneys to kill the sniper.

Go around and walk down the hill.

Follow the road west to the same house.

Enter the house and kill the guard through the window.

Kill the guard on the second floor, who is on the rail.

Kill the guard who emerges from the first-floor door.

Take the stairs to the second floor.

Go to the doorway to the northwest.

Descend the stairs and enter through the next doorway. The game will then checkpoint (save your progress), and you will have completed this objective.