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