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