The Imperial City Add-on for The Elder Scrolls Online: Tamriel Unlimited has 6 achievements worth 200 gamerscore.
Complete the Imperial City Arena by slaying the Ringmaster and her monstrous servants.
Complete the Imperial City Temple event by defeating the Daedric Titan, Uzuruz.
Bring an end to Molag Bal's secret plot in the Imperial City.
Complete the Barathrum Centrata event deep beneath the Imperial City.
Gain 900 Tel Var Stones from a single kill.
Kill all the Patrolling Horrors in the Imperial City.