Demonic forces have barricaded the U-Bahn subway tunnels that stand between the group and salvation. The group must ventures into them and brave the unspeakable horros they contain if they are to find a way out of Berlin.
The group starts overlooking a large plaza and the U-Bahn entrance. Aside from small groups, there is not much activity at the start. Entering the subway will show that the entrance is locked, and you need to retrieve five skull keys.
The first keys are foun in the subway to the left. At the first T-junction, zombies will attack from both sides, with a larger group and an elite machine gunner from the right, The two branches eventually lead to a corridor with barbed wire, which spawns kamikazies that detonate on the spot.
When you reach the large room with the altar and skull key, you will have to fight against a hoard. Once the hoard is eliminated, collect the skull key and head to the safe room.
There are a few zombies approaching from the entrance, and there is a sniper zombie that is outside. Head to the second subway tunnel to continue.
The first T-junction, you can go either left or right. There is a hoard of zombies approaching from both directions, thus you should put a trap to cover one of the two passages. Although both passages eventually lead to the same route, the skull key is found down the left passage, before taking the side branch leading down and left.
The skull key is another arena hoard room. The initial wave of enemies teleports into the room, while the remainder will approach from the hallway. Once the enemies are eliminates, you can get the skull keys.
The next room has two skull keys that are easily grabbed, no fight required beyond the previous room. Continue to the end for the safe room.
Exit the safe room. When you reach the surface, there is a medium group of scattered zombies present, including a sniper.
The final skull key will be in the newly opened building, and you can unlock the occult seal. Once you do, there will be a few kamikazie zombies charging from the tunnel. Going through the tunnel doors will awaken a horde. Once the zombies are
Exiting the safe room leads to an alleyway, leading to the canal docks. There are two wheels that need to be turned, on both sides of the dock.
When you open the docs, the occult general will attack. In this encounter, there is plenty of open terrain allowing you or the group to move easily. To destroy the general, you need to hit the skulls surrounding him, before getting head shots on the general himself.
Final safe room:
- "Hello? I hope you can hear me!"
- "We spotted you from the air and I'm coming to pick you up."
- "You'll have to open the gates at the canal dock so I can get through but then we'll be home dry!"
- "Chin up, we're getting you out of there."