The skin unlocked by this item is required to complete the following achievements:
{"item_id": "13694", "name": "Knight's Primordus Axe", "description": "", "type": "Weapon", "level": "80", "rarity": "Exotic", "vendor_value": "264", "icon_file_id": "534136", "icon_file_signature": "DB4407DDCC62419E1D43476EC645049E7F44EE3B", "default_skin": "3893", "upgrade_recipes": [], "game_types": ["Activity", "Wvw", "Dungeon", "Pve"], "flags": ["SoulBindOnUse"], "restrictions": [], "details": {"type": "Axe", "damage_type": "Physical", "min_power": "857", "max_power": "1048", "defense": "0", "infusion_slots": [], "infix_upgrade": {"id": 158, "attributes": [{"attribute": "Power", "modifier": 85}, {"attribute": "Precision", "modifier": 85}, {"attribute": "Toughness", "modifier": 120}]}, "suffix_item_id": "", "secondary_suffix_item_id": ""}}