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Mission icon EMPRESS

Empress Mission Icon

Empress is an optional mission in chapter 4 of Armored Core 4.



  • Damage: 35200 AP (36200 AP on hard mode)
  • Ammo Use: N/A
  • Mission Time: 360 seconds


Let's confirm the mission.

We've detected Prometheus, a BFF group NEXT. We need you to destroy it.

Prometheus' pilot, Mary Shelley, is a legendary sniper - they say BFF based their entire weapons design philosophy around her combat style.

Her number is 5. She's a special threat, even among the Originals. Bear that in mind as you go out there.

That's not all - we're picking up dense Kojima Particles emissions from the ice on Scion Bay. Expect the Kojima interference to weaken your Primal Armor out there.

Those are your orders. You'll be fine. I know you can do this.

Special debriefing[]

So you outmanned even Number 5. You're a breed apart - perhaps unique in your skills.

You should get some rest now. Sleep well, soldier.


The mission is to destroy the enemy NEXT, Prometheus. According to the briefing, The area's Kojima contamination cause the Primal Armor's regeneration rate slower than usual and reduces lock-on range. If the players takes too long to defeat Prometheus, Joshua O'Brien comes in to assist.

Hard mode differences: Joshua O'Brien does not appear.




Fiona Jarnedfelt:Enemy Next confirmed. That's Prometheus. She's showing no sign of running. Take her out.

Mary Shelley:Goodness… Come all this way to die, have you?

Fiona Jarnedfelt:The enemy's mainstay is the sniper rifle, best adapted to long-distance combat.

Mary Shelley:You make a nice target.

Fiona Jarnedfelt:Prometheus is hit. You're damaging her.

Mary Shelley (when significantly damaged):Hmph, you're pretty good. It's useless, though. We're different animals.

Fiona Jarnedfelt:Closing in on the target. You have the advantage now! Don't let her get away!

Fiona Jarnedfelt:Damage to Prometheus confirmed. Just a bit more. Keep up your attack.

Mary Shelley What?! Is this it? No, I can finish this.

Mary Shelley (upon defeat):Why...? But my… superiority is…

Fiona Jarnedfelt:Prometheus has ceased activity. The mission was a success. Good work. Please head back.