Nightmare #7 | Nightmares Wolfenstein: The Old Blood Guide
Last update: 11 May 2016
The last but one nightmare is in the seventh chapter, entitled Old Town. In order to reach the bed shown in the picture, you have to swim across the canal near the bridge. When you get there, get out of the water, and you will find yourself close to the place.
While exploring the nightmare, follow the same rules as before. Eliminate opponents, collect ammo, and search every corner. The above map should help you find all secret passages and the key that opens the pathway to the elevator. After collecting all 16 silver plates marked on the map pick up the key and head to the exit. This way you will unlock another collectible character, the white sentry from nightmare.