Mjolnir Underground Cavernst

Mjolnir Underground Caverns

Mjolnir Underground Caverns

Explore the underground caverns of Mjolnir, obtain Flush Equipment Blueprints, collect new crafting materials, enchant Flush weapons, and obtain new cards.

Recommended Level: Base Level 250 or higher

Location • Blueprints • Materials • Equipment Enchantment • Flush Weapons • New Cards

Mjolnir Underground Caverns Location

Information	Details
Entrance Map	Einbroch Field 08
Entrance Coordinates	ein_fild08 192 49
Navigation Command	/navi ein_fild08 192/49
Requirement	Base Level 250 or higher

Players can reach the entrance by entering the following command in the game chat:

/navi ein_fild08 192/49

Monsters inside the Mjolnir Underground Caverns may drop:

• Flush Equipment Blueprints
• Mjolnir's Energy
• Mjolnir's Treasure
• Other materials associated with the underground cavern

New Items: Flush Equipment Blueprints

Blueprints are used to create or strengthen weapons belonging to the Flush Equipment series.

Available Blueprints

• Amplify (Metal Detector MK47)
• Amplify (Jewel Detector Mk47)
• Amplify (Safety Saber)
• Amplify (Safety Foxtail)
• Amplify (Blocking Spear)
• Amplify (Claw Sword)
• Amplify (Rubber Hammer)
• Amplify (Saw Axe)
• Amplify (Safety Knuckle)
• Amplify (Safety Manual)
• Amplify (Welding Wand)
• Amplify (Detecting Staff)
• Amplify (Grinder Huuma Shuriken)
• Amplify (Bolt Shooter)
• Amplify (Bolt Crusher)
• Amplify (Bolt Revolver)
• Amplify (Safety Whip)
• Amplify (Safety Lute)
• Amplify (Metal Detector MK47-2)

Common Blueprint Materials

Most Flush equipment blueprints require a combination of:

• Shadowdecon
• Dynite
• Weapon Enhancement Stone (High Grade)
• Mjolnir's Treasure
• Mjolnir's Energy

Important: Material requirements may differ between weapons. Players should verify the required quantities through the relevant in-game crafting NPC before exchanging materials.

New Materials

Material	Usage
Mjolnir's Energy	An energy source obtained from monsters in the Mjolnir Underground Caverns. Used for Flush Equipment crafting and enhancement.
Mjolnir's Treasure	A treasure found beneath Mjolnir. Used as a crafting material for Flush Equipment Blueprints.
Shadowdecon	A high-grade material required by several Flush Equipment Blueprints.
Dynite	A crafting material required when creating or upgrading Flush weapons.
Weapon Enhancement Stone (High Grade)	A high-grade weapon material included in Flush Equipment crafting requirements.

NPC Equipment Enchantment

Flush-series weapon enchantment is handled by the Flush Mk4U NPC.

Information	Details
NPC Name	Flush Mk4U
Map	Einbroch Field 08
Coordinates	199,50
Navigation Command	/navi ein_fild08 199/50
Purpose	Flush weapon enchantment

Use the following command to locate the NPC:

/navi ein_fild08 199/50

Enchantment Reminder

Before attempting an enchantment:

1. Confirm that the correct Flush weapon is selected.
2. Review the required materials.
3. Remove equipment that should not be processed.
4. Check whether the enchantment can fail or replace an existing option.
5. Keep enough inventory space for returned items.

New Flush Weapon Series

The Flush Weapon Series consists primarily of Level 250, Weapon Level 5 equipment designed for expanded classes and fourth jobs.

Weapon	Type	Main Class
Flush Metal Detector Mk47 [2]	Dagger	Shadow Cross
Flush Jewel Detector Mk47 [2]	Dagger	Abyss Chaser
Flush Safety Saber [2]	Sword	Biolo
Flush Safety Foxtail [2]	One-Handed Staff	Spirit Handler
Flush Blocking Spear [2]	Spear	Imperial Guard
Flush Claw Sword [2]	Two-Handed Sword	Dragon Knight
Flush Rubber Hammer [2]	Mace	Cardinal
Flush Saw Axe [2]	Two-Handed Axe	Meister
Flush Safety Knuckle [2]	Knuckle	Inquisitor
Flush Safety Manual [2]	Book	Sky Emperor
Flush Welding Wand [2]	Staff	Soul Ascetic
Flush Detecting Staff [2]	Two-Handed Staff	Arch Mage
Flush Grinder Huuma Shuriken [2]	Huuma Shuriken	Shinkiro / Shiranui
Flush Bolt Shooter [2]	Bow	Windhawk
Flush Bolt Crusher [2]	Katar	Shadow Cross
Flush Bolt Revolver [2]	Pistol	Night Watch
Flush Safety Whip [2]	Whip	Trouvere
Flush Safety Lute [2]	Instrument	Troubadour
Flush Metal Detector Mk47-2	Dagger	Shadow Cross

General Upgrade Bonuses

Flush weapons commonly provide additional effects at these refinement levels:

• Refine +7: Additional attack, magic attack, attack speed, or casting improvements.
• Refine +9: Additional skill damage and damage against enemies of different sizes.
• Refine +11: Further skill damage and global cooldown reduction.
• Grade D: Commonly provides P.Atk or S.Matk.
• Grade C: Commonly improves the weapon's supported skills.
• Grade B: Commonly improves damage against enemies of different properties.
• Grade A: Commonly provides another increase to supported skill damage.

Note: Exact effects are different for every weapon. Always check the in-game item description before refining, grading, enchanting, or trading a Flush weapon.

New Cards

New cards may be obtained as part of the Mjolnir Underground Caverns content.

The card effects include bonuses related to:

• Wind-property magic damage
• Holy-property magic damage
• Long-range physical damage
• Melee physical damage
• ATK percentage
• Refine-based bonuses
• Card set bonuses
• Additional SP consumption in exchange for stronger effects

Players should check each card's in-game description before inserting it into equipment.

Warning: Card removal may require special materials or NPC services. Confirm the equipment and card combination carefully before compounding.

Quick Player Guide

1. Reach Base Level 250.
2. Travel to ein_fild08 192,49.
3. Enter the Mjolnir Underground Caverns.
4. Defeat monsters to collect blueprints and materials.
5. Obtain the appropriate blueprint for the desired Flush weapon.
6. Prepare Shadowdecon, Dynite, High-Grade Weapon Enhancement Stones, Mjolnir's Treasure, and Mjolnir's Energy.
7. Craft or upgrade the selected Flush weapon.
8. Visit Flush Mk4U at ein_fild08 199,50 for equipment enchantment.
9. Refine and grade the weapon according to the desired build.

External Reference

For the original update announcement and detailed weapon descriptions, see:

• Official Mjolnir Underground Caverns Update
• Mjolnir Underground Caverns Locations
• New Items Blueprint Flush Series
• NPC Equipment Enchantment
• New Weapon Flush Series
• New Cards