The Rise of Iron Add-on for Destiny has 9 achievements worth 250 gamerscore.
Complete an encounter in the Archon's Forge.
Complete the "Kovik's Sin" quest.
Complete the "Rise of Iron" quest.
Complete the "King of the Mountain" mission.
Activate all Iron Lord Artifacts.
Play the Rise of Iron theme on the bells in the Iron Temple.
Complete the "Glory and the Taking of It" quest.
Complete the "Wrath of the Machine" raid.
Complete the "Wrath of the Machine" raid on heroic difficulty.