return {
  easy = {
    en = "Easy"
  },
  normal = {
    en = "Normal"
  },
  hard = {
    en = "Hard"
  },
  harder = {
    en = "Nightmare"
  },
  hardest = {
    en = "Cataclysm"
  },
  survival_hard = {
    en = "Veteran"
  },
  survival_harder = {
    en = "Champion"
  },
  survival_hardest = {
    en = "Heroic"
  }
}