The skin unlocked by this item is required to complete the following achievements:
{"item_id": "41463", "name": "Fusil-harpon de Primordius sentinelle", "description": "", "type": "Weapon", "level": "80", "rarity": "Exotic", "vendor_value": "396", "icon_file_id": "534131", "icon_file_signature": "3911EF3F221849BBE1E1790B380D0AF30179BCD3", "default_skin": "3886", "upgrade_recipes": [], "game_types": ["Activity", "Wvw", "Dungeon", "Pve"], "flags": ["SoulBindOnUse"], "restrictions": [], "details": {"type": "Speargun", "damage_type": "Physical", "min_power": "905", "max_power": "1000", "defense": "0", "infusion_slots": [], "infix_upgrade": {"id": 686, "attributes": [{"attribute": "Power", "modifier": 171}, {"attribute": "Toughness", "modifier": 171}, {"attribute": "Vitality", "modifier": 239}]}, "suffix_item_id": "", "secondary_suffix_item_id": ""}}