You can check out game guide on 12SKY M GLOBAL

● Overview
- Boss monsters appear on each floor of the Cave of Chaos.
- Defeating them rewards you with a Green Chaos Chest depending on the floor.
● Cave of Chaos Raid
○ Basic Information
- Available to any character eligible to enter the Cave of Chaos.
- Boss monsters appear in specific areas but are not announced in advance.
- Up to 4 spawns per day, resetting at 02:00/11:00/16:00/21:00 KST
- If the boss is not defeated, it remains in place the next day.
- If you die, you will respawn at the entrance of the Cave of Chaos.
○ 1F Spawn Area

○ Combat
- Bosses appear at designated spawn locations.
- If you die to a boss without a protection scroll, your EXP decreases, and you respawn at the entrance.
- When the boss is defeated, a Green Chaos Chest is delivered to your inventory.
● Cave of Chaos Raid Rewards
○ 1F Reward — Green Chaos Chest

- You must be within the boss's area at the time of its death to qualify.
- You must deal a certain amount of damage to the boss to qualify.
- Dead players at the time of defeat do not receive rewards.
※ Using a Green Chaos Chest grants 1 random item from its list.
※ You can obtain the Blue Cloud Left Earring (Decoration 1) from this chest.