I found a server that just dropped the Ruinmoss Dungeon and it is made to feel like real endgame content.
You go in with a team in private 4 player instances and you fight multiple custom bosses. The last fight has progressive summons and it can overwhelm your group if you are not coordinated.
They are actively balancing the dungeon right now and keep inventory is enabled inside while they tune the difficulty. Maces also have a special interaction in one encounter that can help you clear faster.
Every clear gives a Fairy Key and there are hidden chests plus new dungeon materials that are meant to connect to future updates.
