There are 9 Metro Stations in Dying Light 2. Metro Stations serve as fast travel locations. Finding and activating all Metro Stations unlocks the "Tube Map" achievement / trophy.
Certain Metro Stations will be activated as you progress through the game's main storyline. To activate other Metro Stations, you need to activate one or more Generators, located inside the Metro Chambers. If an Electrical Station is activated in the Zone, this won't be necessary.
Metro: Hayward Square (2) (Night)Overrun by infected.
Metro: The Holy Trinity (Story)Automatically unlocked after completing the main story quest - "Let's Waltz".
Metro: Cathedral (3) (Night)Overrun by infected.
Metro: Downtown Court (Story)Automatically unlocked after completing the main story quest - "Let's Waltz".
Metro: King William Bridge (2)Occupied by Renegades.
Metro: Newalls Crossing (2) (Night)Overrun by infected.
Metro: South Loop (5)Occupied by Renegades.
Metro: VNC Tower (4)Occupied by Renegades.
Metro: Waterside (2) (Night)Overrun by infected.