Complete the following tasks during {c_highlight}Escalating Nightmares{/c} in {c_important}Torment II or higher{/c}.
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Open {c_important}Grand Horadric Caches{/c} found in {icon:Marker_HoradricSecretPortal,2} Horadric Strongrooms during {icon:Marker_NightmareDungeonEscalation, 2.5} {c_highlight}Escalating Nightmares{/c}Complete {icon:Marker_LocalEvent, 2.5} Local Events with {c_important}Mastery{/c} in {icon:Marker_NightmareDungeonEscalation, 2.5} {c_highlight}Escalating Nightmares{/c}Hiddden Achievement Prior Chapter(PH)