The skin unlocked by this item is required to complete the following achievements:
{"item_id": "17382", "name": "Nightmare Court Sarong", "type": "Armor", "level": "80", "rarity": "Exotic", "vendor_value": "370", "icon_file_id": "61476", "icon_file_signature": "EB75DEA69AD92A9D1B17F97C20650FC6B0F14C06", "default_skin": "685", "upgrade_recipes": [], "game_types": ["Activity", "Wvw", "Dungeon", "Pve"], "flags": ["HideSuffix", "AccountBound", "NoSell", "SoulBindOnUse"], "restrictions": [], "details": {"type": "Leggings", "weight_class": "Light", "defense": "194", "infusion_slots": [], "infix_upgrade": {"id": 154, "attributes": [{"attribute": "Precision", "modifier": 64}, {"attribute": "Toughness", "modifier": 64}, {"attribute": "ConditionDamage", "modifier": 90}]}, "suffix_item_id": "24848", "secondary_suffix_item_id": ""}}