Walled In is an achievement in Awakening the Nightmare for Halo Wars 2. This achievement is obtained when a player has a wall built on every plot of the map at the same time in Terminus Firefight.
Walled In is an achievement in Awakening the Nightmare for Halo Wars 2. This achievement is obtained when a player has a wall built on every plot of the map at the same time in Terminus Firefight.