Three HousesThree Houses

The Impregnable Fortress

Azure Moon, Chapter 20

Mission Overview

The monthly mission for Azure Moon, Chapter 20 is Taking Fort Merceus. Note: the following data is for Maddening mode, Normal/Hard mode may differ.


Victory ConditionDefeat Condition
Defeat the Death KnightByleth or Dimitri dies or the player's army is routed

Initial Units



This data has not been recorded yet.


  • Every odd turn starting from turn 3: 1 Paladin spawns from the bottom right, near an initial Paladin, 1 Dark Bishop spawns from the bottom left, near an initial Dark Bishop. These reinforcments will stop if their respective initial enemies are defeated.

Obtainable Items

Brave AxeDropped by Caspar.
Extra Large BullionTop left chest.
Black PearlBottom left chest.
Elixir x2Steal from Linhardt and Caspar.
VulnerarySteal from Linhardt.


  • There is a Ballista under the enemy's control.
  • Caspar and Linhardt are replaced by generic enemies if they were recruited.
  • Caspar begins moving if Linhardt is aggro'd.
  • Death Knight begins moving if any of their nearby units are aggro'd.