Full list of all 16 Battle Ages achievements worth 1,100 gamerscore. It takes around 150-200 hours to unlock all of the achievements in the base game.
The base game contains 14 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 2 achievements worth 100 Gamerscore.
Acquire 2500 trophies in battle
Achieve 250 offensive victories
Advance your settlement to the Industrial Age
Completed 30 scientific researches
Build 30 new buildings in your settlement
Advance your settlement to the Renaissance Age
Upgrade 100 buildings in your settlement
Steal 1000000 coins from the enemy
Achieve 60 stars in the the campaign
Advance your settlement to the Medieval Age
Advance your settlement to the Classical Age
Win 10 consecutive victories against the enemy
Advance your settlement to the Ancient Age
Achieve 250 defensive victories
Advance your settlement to the Modern Age
Advance your settlement to the Atomic Age