This next area involves a stealth approach. You must remain undetected to survive. The stealth meters work identically to how it worked on the previous level. If a German spots you, an iron cross appears on your HUD. Get out of his view before the meter fills to avoid detection.
The Stealth Approach: Scale the ledge off the left part of the balcony.
Drop down behind the soldier below. Wait for the guards directly ahead to pass through to the door. Perform a melee kill on the soldier with his back turned toward you.
There is a guard patrolling ahead off to the left. Wait for him to turn away from you behind the truck. Move against the far wall.
The safest thing to do is wait until the guard moves away from the back of the truck and then sneak around the side to the back area. If you want to kill this guard, lure him into a darker area first.
Pick the lock of the door to the right. This leads to a well-lit hallway; wait for the guards to walk past. Step into the next room to rescue Oberst before he is executed.
Exit down the hallway back outside to find a truck. Move behind the truck and silently kill the guard located there.
Press the Activate button on the doors to plant the first bomb.