Treasure Coffer is an object found in dungeons, guildleves and treasure hunt. In guildleves, treasure coffers are spawned randomly and can be picked up to acquire items. In dungeons, treasure coffers usually contain items such as consumables. Different dungeons have different mechanics, some dungeons have coffers that turn into enemies, others require the players to solve puzzles to earn better loot. In Treasure Hunt, when the player solves the map, a treasure coffer appears. When the player clicks on the coffer, enemies spawn. Players need to defeat the enemies before earning the loot from the coffer.
Treasure Coffer appears after boss fights and at the end of dungeons and trials. They offer rare armor and weapons from that instance's loot table.