Age of Empires II (2013)
294 Achievements
254-265h
Steam
One Thousand Castles
On this day you have created your thousand’th castle. Huzzah!
3.3%
How to unlock the One Thousand Castles achievement in Age of Empires II (2013) - Definitive Guide
arcturusn7
TrueSteamAchievements
TrueSteamAchievements
I got this by creating a custom scenario with a bunch of starting castles and replaying in private Multiplayer games over and over. The game seems to count any starting castles towards this achievement.
