The Return of Rome Add-on for Age of Empires II: Definitive Edition has 40 achievements.
Complete the Sargon campaign.
Subdue both Sippar and Borsippa in "The Chosen One".
Bring the Artifact to each city-state before 30 minutes have elapsed in "Divine Will".
Destroy Ur's Wonder before it is completed in "The Prophecy".
Complete the Pyrrhus campaign.
Win with all allied Town Centers remaining in "A Second Alexander".
Win before Demetrius arrives in "The Many Kings of Macedon".
Defeat all enemies in "Sisyphus".
Complete the Trajan campaign.
Win "Legates and Legions" in less than 10 minutes.
Defeat the Dacian Army in "Heads Will Roll".
Lose less than 5 units to conversion in "An Old Enemy".
Win a game as the Romans.
Win a game as the Assyrians in Return of Rome.
Win a game as the Babylonians in Return of Rome.
Win a game as the Carthaginians in Return of Rome.
Win a game as the Choson in Return of Rome.
Win a game as the Egyptians in Return of Rome.
Win a game as the Greeks in Return of Rome.
Win a game as the Hittites in Return of Rome.
Win a game as the Lac Viet in Return of Rome
Win a game as the Macedonians in Return of Rome.
Win a game as the Minoans in Return of Rome.
Win a game as the Palmyrans in Return of Rome.
Win a game as the Persians in Return of Rome.
Win a game as the Phoenicians in Return of Rome.
Win a game as the Romans in Return of Rome.
Win a game as the Shang in Return of Rome.
Win a game as the Sumerians in Return of Rome.
Win a game as the Yamato in Return of Rome.
Kill 15 units with Scouts in the Tool Age in Return of Rome.
Win 3 games in a row in Return of Rome.
Win a game without losing a single unit in Return of Rome.
Win a game by constructing a Wonder in Return of Rome.
Reach the Iron Age before 20 minutes of game time have elapsed in Return of Rome.
Train 60 Chariot Archers in Return of Rome.
Complete the Ascent of Egypt campaign.
Complete The First Punic War campaign.
Complete the Glory of Greece Campaign
Complete the Voices of Babylon Campaign