A.M.P.S Type – Kaempferi

A.M.P.S Type - Abyssicola

A.M.P.S Type - Archelon

Energy Conversion Device

Berserk A.M.P.S Type - Gerstalker

Back at the Deep-Sea Tunnel, there's sound echoing through the tunnels where there should be none.

A cube found in certain regions of the Demon Realm. It contains brilliant secrets.


Random 1:
- Forgotten Golden Earrings
- Forgotten Golden Arm Ornament
- Forgotten Golden Necklace
- Forgotten Golden Headgear
- Forgotten Golden Ring
- Seeker of Secrets
- 3~5 Secret Fragment

(Right-click to open)

You can obtain a set amount of EXP as dungeon clear reward.

EXP Gain increase effect does not apply to this EXP reward unless it's the Secret Dungeon Only EXP Gain increase effect.

You can obtain a set amount of ED as dungeon clear reward.
ED Gain: 18,000,000ED

Item Drop Rate, ED Gain increase effect does not apply to this ED reward unless it's the Secret Dungeon Only Drop Rate increase effect.

Cobo's greatest certificate of merit for the courageous adventurer that protected Secret Dungeon's barrier.

(Use to trade various items with NPC Ariel.)

Deep-Sea Passage: Emergency Crisis

Stage 1

Substage 1

Substage 2

Stage 2

Substage 1

Featured Drops

Ending Speech

Monster Stats