The Hall of the Twisted Warlord is the final Tier 1 Abyssal Dungeon players will experience in Lost Ark before making it into Tier 2, and it's also the first "real" Abyssal Dungeon in terms of mechanical complexity and difficulty. Players will need to be at least 460 Item Level in order to enter, and the rewards they'll get for clearing this Dungeon (and possibly purchasing the Bonus Chest at the end) will allow them to craft their Legendary Tier 1 Gear and/or Accessories.