The skin unlocked by this item is required to complete the following achievements:
{"item_id": "18610", "name": "Nightmare Court Legguards", "type": "Armor", "level": "80", "rarity": "Exotic", "vendor_value": "370", "icon_file_id": "218946", "icon_file_signature": "3C9B7D0A17730AD49AB795CEC54B60A9B6CAE2C3", "default_skin": "695", "upgrade_recipes": [], "game_types": ["Activity", "Wvw", "Dungeon", "Pve"], "flags": ["HideSuffix", "AccountBound", "NoSell", "SoulBindOnUse"], "restrictions": [], "details": {"type": "Leggings", "weight_class": "Heavy", "defense": "242", "infusion_slots": [], "infix_upgrade": {"id": 159, "attributes": [{"attribute": "Power", "modifier": 64}, {"attribute": "Precision", "modifier": 90}, {"attribute": "ConditionDamage", "modifier": 64}]}, "suffix_item_id": "24848", "secondary_suffix_item_id": ""}}