Not One, But Two Jormungars (25 player)

Raw Blizzard Data

{
  "_links": {
    "self": {
      "href": "https://us.api.blizzard.com/data/wow/achievement/3937?namespace=static-12.1.0_68914-us"
    }
  },
  "id": 3937,
  "category": {
    "key": {
      "href": "https://us.api.blizzard.com/data/wow/achievement-category/14922?namespace=static-12.1.0_68914-us"
    },
    "name": "Lich King Raid",
    "id": 14922
  },
  "name": "Not One, But Two Jormungars (25 player)",
  "description": "Defeat Acidmaw and Dreadscale within 10 seconds of each other in 25-player mode.",
  "points": 10,
  "is_account_wide": false,
  "criteria": {
    "id": 8141,
    "description": "Defeat Acidmaw and Dreadscale within 10 seconds of each other in 25-player mode.",
    "amount": 1
  },
  "media": {
    "key": {
      "href": "https://us.api.blizzard.com/data/wow/media/achievement/3937?namespace=static-12.1.0_68914-us"
    },
    "id": 3937
  },
  "display_order": 141
}