World BOSSes respawn daily at 1300 and 2000, and everyone in the server will have to work together to defeat them! They may drop S-rank equipment and mercenaries. When their HP drops to 70%, 40%, and 10%, Lucky Chests will be drawn.
World BOSS loot
Top damage dealer: Balen Chest
Damage dealer no. 2-5: Golden Chest
Damage dealer no. 6-10: Gilded Chest
Last hit: Slayer Chest