Here is the full list of all 12 Castle Story achievements.
Build 100000 bricks.
Build 10000 bricks.
Spawn Bougre.
Reach wave 60 of Invasion.
Reach wave 30 of Invasion.
Reach wave 15 of Invasion.
Build 1000 bricks.
Win the Conquest Lights Out preset.
Defeat a Warlock!
Defeat a Biftron!
Build 100 bricks.
Build your first brick.