Grand Ages: Medieval
50 Achievements
GOG
Big Brother
You have built 10 defense towers.
4.6%
How to unlock the Big Brother achievement in Grand Ages: Medieval - Definitive Guide
Just build 10 defense towers in 1 game. To build a tower you need to have spent a development point in the Infrastructure tab to get access to the tower options, then have a builder build 10 towers. The resources for building a tower are taken from the closest city to where the tower is being built so make sure that city has enough.