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Where to Find the Back Door Key in Wo Long
Wo Long: Fallen Dynasty

Where to Find the Back Door Key in Wo Long

Find the Back Door Key in wo long fallen dynasty during the War's Flames Blaze Fiercely mission. The key is in the sewers, past the mermaids.

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Find the Back Door Key in wo long fallen dynasty during the War's Flames Blaze Fiercely mission. The key is in the sewers, past the mermaids.

Walkthrough
  1. 1
    After accepting the quest from the Hermit, start the "War's Flames Blaze Fiercely" mission.
  2. 2
    Head straight, turn right, and go down the stairs.
  3. 3
    Lower the water level using the contraption by the ladder.
  4. 4
    Enter the vein-covered tunnel.
  5. 5
    To the left before the tunnel, you can fight a giant alligator enemy to open a chest.
  6. 6
    Follow the tunnel into the next room and defeat the spider that ambushes you.
  7. 7
    Continue through the door into an area with mermaids.
  8. 8
    Explore this area for scattered items, then take the right path and climb the ladders to exit the sewers.
  9. 9
    Follow the path around into a street with human enemies, including archers on rooftops.
  10. 10
    Proceed past a bridge with four enemies (one Leader at Rank 20 Morale). It is advised to return later with higher Morale for the Battle Flag here.
  11. 11
    Instead of crossing the bridge, take a right before it and cross the red bridge, defeating the enemy on it.
  12. 12
    Turn right after crossing the red bridge to find a Battle Flag. Defeat enemies along the way.
  13. 13
    Go past the barricade nearer the flag to progress.
  14. 14
    Follow the path right, defeating enemies, and go down stairs to lower the water again.
  15. 15
    Enter the second set of sewers.
  16. 16
    In the next area, you will encounter mermaids. Explore for items.
  17. 17
    Follow the path right to the room with a mermaid and a ladder. Defeat the mermaid.
  18. 18
    Before climbing the ladder, jump up blocks opposite it to get a Marking Flag.
  19. 19
    Exit the sewers via the ladders.
  20. 20
    You will enter an open area with two enemies. Open the door to the right for a shortcut.
  21. 21
    Progress towards the enemies and around a tower to find another path, or climb the tower to jump on the roof.
  22. 22
    Defeat tough enemies in this area.
  23. 23
    Open the large chest near the building before going through the large archway.
  24. 24
    Cross the dilapidated bridge using a wooden platform.
  25. 25
    You will see your next Battle Flag, which is locked. Defeat the nearby leader (spear-wielding, Morale Rank 7 human) to unlock it.
  26. 26
    To the left of the flag, defeat the patrolling enemy, then backstab followers behind the flag to find a Marking Flag.
  27. 27
    The northwest path from the flag leads to a Shitieshou with an enemy.
  28. 28
    Head back to the intersection and take the east path, defeating the two guards at the crack in the wall.
  29. 29
    Follow the path to the next intersection and head right (south) towards the next bridge, defeating enemies along the way.
  30. 30
    The Back Door Key is located in the sewers, in a large room with mermaids, after defeating a spider.
Tips
  • The Hermit hints the key is in a "dark and cramped" location, referring to the sewers.
  • The key is found in the sewers during the "War's Flames Blaze Fiercely" mission.
  • The specific location is a large room with mermaids, after a spider encounter.
  • Consider returning to areas with high-Morale enemies and Leaders later when your own Morale is higher.
  • Look for chests and Marking Flags scattered throughout the sewers and open areas.

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