Summon these great beasts, defeat them, then use the appropriate Materials to open their Hoards.
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{c_important}Tormented Echo of Varshan{/c}, summoned within the{icon:Marker_Dungeon_BossSummon,2}{c_highlight}Malignant Burrow{/c}{c_important}Tormented Echo of Grigoire, the Galvanic Saint{/c}, summoned within the{icon:Marker_Dungeon_BossSummon,2}{c_highlight}Hall of the Penitent{/c}{c_important}Tormented Echo of the Beast in the Ice{/c}, summoned within the{icon:Marker_Dungeon_BossSummon,2}{c_highlight}Glacial Fissure{/c}{c_important}Tormented Echo of Lord Zir{/c}, summoned within the{icon:Marker_Dungeon_BossSummon,2}{c_highlight}Ancient's Seat{/c} in {icon:Marker_WargroundWaypoint,2}{c_important}The Darkened Way{/c}Hiddden Achievement Prior Chapter(PH)