Age of Empires Online
55 Achievements
1,455
Xbox 360
Ssssssssh!
Build the Library of Pergamum in your Capital City.
40
How to unlock the Ssssssssh! achievement in Age of Empires Online - Definitive Guide
Shiftie
To do this you must construct the rare treasure chest drop, Library of Pergamum, in your Capital City. This is not tradeable anymore.
The required materials are:
5 Concrete Blocks
4 Vellum Strips
3 Delphi Limestone
