The Other You

This is an Act 6 side quest, offered by Seer Rugia in Coven's Refuge after reaching Honored Faction status with the Coven of Ugdenbog and destroying the exhaust vents in the The Living Factory quest.

Seer Rugia cryptically states that she has felt a presence that was like you, yet not, within the Fleshworks of Malmouth.

This quest allows the player character to face the Aetherial he/she was formerly possessed by.

Objectives

 * Find the Other you Seer Rugia spoke of
 * Slay Allostria

Guide
Allostria can be found in the north of The Infestation, behind the previously locked Living Flesh Door. There are several Dialogue options, but all lead to fighting her. Defeating Allostria will end the quest.