Full list of all 44 Age of Empires: Definitive Edition achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Build 500 heavy catapults
Train 500 Horse Archers
Train 400 Assyrian Chariot Archers
Train 256 Macedonian Hoplites
Train 100 Egyptian Scythe Chariots
Won a ranked Elo game.
Create 1000 Choson Legions
Build 789 Shang wall segments
Convert 1000 units
Convert 20 units with Egyptian Priests
Won a game by holding ruins
Defeated 20 heroes
Killed a Medusa
Destroy 200 temples
Train 100 Minoan Composite Bowman
Complete the First Punic War campaign
Complete the Enemies of Rome campaign
Complete the Imperium Romana campaign
Convert an enemy Priest
Complete the Ave Caesar campaign
Hunt 250 animals
Collected 50,000 stone
Complete the Rise of Rome campaign
Complete the Reign of the Hittites campaign
Build 500 houses
Complete the Yamato Empire of the Rising Sun campaign
Collected 50,000 gold
Explore all areas of a single map
Complete the Voices of Babylon campaign
Won a game by holding all the artifacts
Build 50 Babylonian Towers
Won a game by building and holding a wonder
Win a random map without training any archery units
Win a random map game without training any cavalry
Advanced first to every age
Complete the Glory of Greece campaign
Defeat a Lion (Alpha)
Train 21 Centurions
Train 400 Axemen
Researched every technology available in a single game
Defeat 1000 enemy units
Collected 50,000 food
Complete the Ascent of Egypt learning campaign
Collected 50,000 wood