The skin unlocked by this item is required to complete the following achievements:
{"item_id": "17383", "name": "Manto de la Corte de la Pesadilla", "type": "Armor", "level": "80", "rarity": "Exotic", "vendor_value": "291", "icon_file_id": "61477", "icon_file_signature": "D7509905AD3B9EE00359B041BC3DA29F08D215C7", "default_skin": "686", "upgrade_recipes": [], "game_types": ["Activity", "Wvw", "Dungeon", "Pve"], "flags": ["HideSuffix", "AccountBound", "NoSell", "SoulBindOnUse"], "restrictions": [], "details": {"type": "Shoulders", "weight_class": "Light", "defense": "73", "infusion_slots": [], "infix_upgrade": {"id": 154, "attributes": [{"attribute": "Precision", "modifier": 32}, {"attribute": "Toughness", "modifier": 32}, {"attribute": "ConditionDamage", "modifier": 45}]}, "suffix_item_id": "24848", "secondary_suffix_item_id": ""}}