Here is the full list of all 21 Automata Empire achievements.
Build many Taverns
Build many Walls
Destroy many buildings
Sacrifice your loyal subjects
Exclusively occupy all three territories
Witness the end of the migration
Cultivate a large population
Catapult so many monsters
Some games have a tutorial for a reason.
Destroy their Taverns
Save your subjects from certain death
Combat the undead menace
Seal the tombs for good
Build many Roads
Utilize aerial assaults
Engineer a mighty empire without building Taverns
Kill many enemy combatants
Capture all three flags in one reign
Destroy all three castles in one reign
Cooperate to eliminate all undead in Migration