The Bane of Cairn

This is an Act 4 main quest, offered by Ulgrim in the Necropolis Interior after completing The Necropolis quest.

This is the final quest in the base game and completing it allows access to the next difficulty level.

Objectives

 * Destroy the northern Blood Wagon
 * Destroy the eastern Blood Wagon
 * Destroy the western Blood Wagon
 * Stop the summoning of the Loghorrean
 * Speak to Inquisitor Creed at Fort Ikon

Guide
The three Blood Wagons can be found around the Necropolis Interior.

After destroying them, enter the Tomb of the Watchers and make your way through the Seal of the Loghorrean. At the end of this area the first end boss awaits, Bloodlord Thalonis. Defeating him opens the entrance to the Edge of Madness and the final Boss, Loghorrean, the Voice of Ch'thon.

Afther killing the Boss, report to Inquisitor Creed to claim the reward.