Go back to the bottom floor and help the man take a shower, allowing you to snag his suspenders. Next, head back inside, climb the ladder and arrange the pipes to match the image we posted above. Toss the coal at the broken pipe to fix it. Grab a lump of what looks to be coal off the floor, then go back outside and climb on the outhouses to the right. Head to the back area of the map and into the building with the water symbol on it. You'll have to move back and forth between several buildings, some at the front and others at the back. As soon as you gain control, you'll work with Karl and try to break out of a POW camp.