Imposing Iron Assault
Quest Type Urgent Quests
Normal Level 20 and up
Hard Level 40 and up
Very Hard Level 55 and up
Super Hard Level 70 and up
Extremely Hard Level 80 and up
Quest Details
Location Earth
Single/Multi-Party UIMultiParty.png Multi-Party Quests
Party Invitation Allowed
Ally Assistance Not Allowed
Conditions For Acceptance
Normal No Level Restrictions
Hard Main Class Level 20 and up
Complete a special Client Order
Very Hard Main Class Level 40 and up
Complete a special Client Order
Super Hard Main Class Level 50 and up
Possess a Super Hard Difficulty Permit
Extremely Hard Main Class Level 75 and up, Sub Class Level 75 and up
Possess a Super Hard Difficulty Permit
Time Limit 00:40:00
Damage Limit 999,999
Ability Adjust None
Post-Quest Raid Reward Boost Rare Drop Drop Rate (up to +100%)

Quest Objective

Destroy the Phantasm Battleship Yamato!

Quest Description

We have confirmed readings corresponding to a powerful phantasm from the Japanese Coastal Waters on the planet Earth. The massive phantasm has started to migrate toward urban areas and significant damage is anticipated if nothing is done. ARKS members are ordered to stop the target's advance.

Maximum dealable damage is limited to 999,999
You will fail this quest if you exceed the time limit.

Target Enemies

Enemy List


Enemy List

*In addition to these, rare enemies may appear. (Very Hard and up)

Differences from Dignity of Steel

Imposing Iron Assault has several significant changes to it if played on Extremely Hard difficulty. If played on Super Hard difficulty or under, the quest plays exactly like The Dignity of Steel Unleashed.

Phase 1 (Land)

  • Phantasms exclusive to Las Vegas will now appear alongside Tokyo phantasms.
  • The Yamato's incendiary, freezing and special rounds will now target players more frequently, have more shots attack at once, and be much harder to dodge.
  • During the dash panel segment, the Yamato will fire its laser cannon at a specific point on the cliff leading up to the high ground for the next wave of enemies.
  • The Yamato's laser on land will charge faster and be more aggressive, targeting areas where players are more likely to be.
  • Before boarding the Yamato, it will create two charged massive orbs, with the second one appearing later and after the first one.
  • There are some enemies on board of the Yamato.

Phase 2 (Sea)

  • The captain of the Yamato will taunt players at the start of the battle.
  • When fighting with the AIS, the Yamato loses it's starting shield it originally had at the start of Dignity of Steel. In exchange, it gains a variety of new attacks and has become much more aggressive.
    • Four Shuttles: The Yamato emits slow moving Space Shuttles that arc towards the sea. If at least one remains and lands in the sea, a massive AOE attack will occur.
    • Micro Missiles: Small, tiny missiles, after locking on with a special red reticule, will drop from the sky at remarkable speeds onto the targeted AIS. The hit stun and damage can easily destroy an AIS if all missiles are to hit.
    • Laser: The Yamato will target the AIS and shortly after beam a laser down from above.
  • Planes spawn from the start of the battle.
  • The Yamato will now teleport through a portal rather than plunge 75 degrees into the sea and then immediately rising from somewhere else.
  • At the mid-point, the Yamato takes on a new form.
  • The Spinning Blades attack has a larger range. After transforming, the Yamato will lower much more quickly, and then rise up with the blades still up.
  • After enough damage, Yamato summons the Intercontinental Ballistic Missiles and puts up its shield. However, he will shortly summon another wave of missiles.

Additional Info

  • A Single-Party version of this Urgent Quest (Iron Juggernaut of the High Seas) can be played right after this Urgent Quest's availability is over.
  • Enemies on board the Yamato will keep spawning until all cannons have been destroyed.
  • When boarding the ship and destroying the cannons on foot, Hagith Femt only takes 1 damage from all damage sources. After destroying all the required cannons, Hagith will still continue to attack the party until the quest proceeds with a cutscene.
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