Complete the following tasks during {c_highlight}Escalating Nightmares{/c} in {c_important}Torment I or higher{/c}.
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Acquire an {c_important}Escalation Sigil{/c}Defeat {c_important}Astaroth and the Amalgam of Rage{/c} at the end of an {icon:Marker_NightmareDungeonEscalation,2.5} {c_highlight}Escalating Nightmare{/c}Collect {icon:Icons_CraftingMat_Masterworking_001, 2.5} {c_pickups}Obducite{/c} during {icon:Marker_NightmareDungeonEscalation,2.5} {c_highlight}Escalating Nightmares{/c}Hiddden Achievement Prior Chapter(PH)