This external district of the Imperial City houses the headquarters of the Imperial Legions, as well as the Imperial Prison itself. The City sewers pass beneath the prison as they drain toward Lake Rumare—but they're inaccessible, of course.
In Imperial City Prison, defeat the Overfiend, Ibomez the Flesh Sculptor, the Gravelight Sentry, the Flesh Abomination, and Lord Warden Dusk without any group member being noticed by the Vigilant Watchers.
Defeat the Overfiend, Ibomez the Flesh Sculptor, the Gravelight Sentry, the Flesh Abomination, the Lord Warden's Council, and Lord Warden Dusk in the Imperial City Prison.
Defeat the Overfiend, Ibomez the Flesh Sculptor, the Gravelight Sentry, the Flesh Abomination, the Lord Warden's Council, and Lord Warden Dusk in Veteran Imperial City Prison.
Defeat all mini-boss and boss enemies in Veteran Imperial City Prison within forty five minutes of starting the dungeon. Timer starts when players enter The Bastion.