The Premium Celt Civilization Add-on for Age of Empires Online (GFWL) has 10 achievements worth 125 gamerscore.
Achieve level 10 with premium Celtic content.
Achieve level 20 with premium Celtic content.
Achieve level 30 with premium Celtic content.
Achieve level 40 with premium Celtic content.
Complete "The Fate of All Traitors" with premium Celtic content.
Complete "Objective: Oxubii" with premium Celtic content.
Complete "The Sack of Delphi" with premium Celtic content.
Build the Crossing the Alps statue in your Capital City.
Build the Thracian Horseman statue in your Capital City.
Build the Wickerboar statue in your Capital City.