Level 50
15 733 
2 400
Posted by on August 16, 2017.
Last updated by on August 18, 2017.
TIER 1
Objective: Catch up with Sarah
Sarah will be waiting for you near the escalators. Approach her to continue.
A side mission, Pieces of Sarah, is available for pick up in the subway, close to where you entered.
The Bomb #2 is located in the first room of the subway, where you enter.
Objective: Make your way to the surface
Sarah will be following your lead in this part. The path forward is pretty linear, so it should not be too hard to find the way.
Eventually, you will get to a point where the path ahead of you is blocked by rubble that has fallen down from the ceiling. If you remember the events of one of the first story missions in the game, Ground Zero, this should be familiar to you.
The Black Signal #4 is on the other side of the rubble.
Sarah will forcw open the gate up ahead with her powers. Prepare to fight several waves of enemies in the next room.
In order to obtain the achievement Master of the Metro, you (or the entire group if you are in a group) must get through this mission without Sarah dying or you receiving any healing from her. She will attempt to heal you if you go below 50% health for more than a couple of seconds.
Using multi-target abilities (AoE or chained) is useful for dealing with packs of enemies.
There will be a few waves before you and Sarah can continue through the metro station. Once all enemies have been dealt with, meet up with Sarah by the entrance to the train at the other side of this corridor. She will open the train doors.
Once you get through the train wagon and step outside on the other side, Sarah will begin to feel unwell and become passive. You have to attack the Filth Hulk in the vicinity to proceed.
The Bomb #2 (Black Signal) is in this area, in the opposite direction from the hulk.
Objective: Try to survive while Sarah recovers
Sarah will be unable to help you for around 15 seconds. You should not stay in direct combat with the Filth Hulk meanwhile. Run around and avoid its attacks. You can also use impairs to temporarily disable the Filth Hulk, buying you some time.
Objective: Defeat the Filthy Hulk
After the timer has expired, Sarah will regain her senses and proceed to help you. Move around strategically, avoid ground attacks and use impairs to buy yourself time.
Objective: Make your way to the surface
Once the Filth Hulk has been defeated, you and Sarah can continue moving through the metro station. You will approach a very dark area, however, Sarah will deploy flares.
There will be a few more waves of Filthy humans here.
Once all waves have been countered, move to the other side of the room by the escalators to continue moving towards the surface.
Objective: Push Back the Filth
Eventually, you will get to the last room in the metro station before reaching the Tokyo surface. There will be a couple of waves of enemies here as well.
Objective: Defeat the manifested Filth
After a while, two stronger forms of filth enemies will spawn. They will use a lot of fast ground attacks and hit for a decent amount of damage. Chances are high that you could die here. If you die, you will respawn just outside the room. Run back in and continue fighting them.
Once they are dead, Sarah will tell you that she cannot leave the station. After that, she takes off and your new goal is to exit the metro station.
Objective: Travel to Kaidan
Go up the escalators and interact with the gate to travel to Kaidan, Tokyo.
The Bomb #3 is located next to the left of a kiosk stand in this last subway room.
The Bomb #1 (Black Signal) will spawn in the exact same as the Buzzing lore above, once you have picked it up.
