Armored Core Wiki

"Investigate Recent Attack" is a mission in Armored Core: Last Raven and Armored Core: Last Raven Portable.

This mission is necessary for Pulverizer Ending 1.


Requester: Alliance Tactical Unit

Operation Area: Tartrus Headquarters

Objective: Investigate the recent attack

Reward: 156,000c

Start Time: 02:13

Mission Summary[]

This mission request has been issued by Alliance's Tactical Unit and involves looking into a recent attack carried out on their forces at Tartrus HQ.

Proceed with care.

Ed Weisz


Our forces at the old corporate headquarters site were decimated during a recent attack. It's unknown who is responsible, but we want you to check it out.


Sheila: Is that a Pulverizer?

Sheila: It looks dangerous, be careful.

Sheila: It's weakening. Keep it up.

Sheila: You're almost there. Don't give up!

Sheila: They're so powerful...

Sheila: I wonder what their purpose is...

Sheila: Let's clear out.

Situation Report[]

The Pulverizer you encountered was obviously dangerous, but not nearly as dead as a well-trained Raven.

Rumors are going around that this was a last attempt by Vertex to turn the tide of the ongoing conflict, but I don't think that's the case.

Ed Weisz




The following information is "gray area" content — it may not be completely factual, and/or falls under YMMV territory.

The enemy itself is a quad-leg Pulverizer equipped with dual blades and dual, back-mounted energy beam. It's usual movement pattern involves circling to the right to the back of the Raven and coming in close. If it manages itself into close range it'll enter its dual blade slash attack, it's during this time that it's open to a counter attack. It'll react to this method after two counter attacks sustained and back away to use its lasers. The mech itself is easy to stun, using a solid ammunitioned, heavy, exploding weapon will lock it in place very easily as well as using a blade. 

A mech with high EN resistance or even a shield is recommended for an easy mission success.

For those with middleweight ACs, it's recommended to bait the Pulverizer into its dual slash attack to gain some hits with a blade while backing away afterwards and hitting hard with a sniper rifle using the structure in the center as cover.


Missions in Armored Core: Last Raven
Time - 08:00 "Destroy Military Base" • "Eliminate Intruders • "Distribution Center Recon"
Time - 10:00 "Escort Allied MT" • "Acquire the Commodity" • "Destroy AC Sundial" • "Remove Bridge Defenders"
Time - 12:00 "Eliminate the Enemy AC" • "Recapture Storage Site" • "Pursue Withdrawing MT"
Time - 14:00 "Protect The Cargo" • "Retake Distribution Center" • "Recover The Cargo" • "Battle Challenge" • "Remove Lab Intruders" • "Investigate Enemy Activity" • "Investigate Research Lab"
Time - 16:00 "Destroy AC Vigilance" • "Destroy Raging Torrent IV" • "Destroy Enemy Squadron" • "Eliminate Enemy Invaders" • "Protect Allied Squadron" • "Destroy The Control Towers" • "Protect Transport Team" • "Destroy Transport Convoy"
Time - 18:00 "Halt Energy Production" • "Defend Against Assault" • "Secure The Terminal Area" • "Protect the ECM Devices" • "Rescue Allied Force" • "Seize The Airstrip" • "Destroy Suspicious Force" • "Eliminate Enemy Patrols" • "Destroy the ECM Devices" • "Destroy Power Generators" • "Prevent Plant Destruction" • "Destroy Underground Force" • "Eliminate Enemy Occupiers"
Time - 20:00 "Protect Reactor Core" • "Prevent Reactor Meltdown" • "Destroy Plant's Defenses" • "Shutdown Energy Plant"
Time - 22:00 "Eliminate Targeted Raven" • "Protect The Bridge" • "Track Down Evangel" • "Protect Warlord's Forces" • "Eliminate Zinaida" • "Destroy Air Assault Force" • "Destroy The Bridge"
Time - 00:00 "Eliminate Sorcerer" • "Protect Transport Train" • "Defeat Evangel" • "Help Allied MT Escape" • "Destroy Transport Train" • "Attack Distribution Center" • "Eliminate Plant Intruders"
Time - 02:00 "Investigate Recent Attack" • "Destroy Research Facility" • "Retrieve Research Data" • "Launch Preemptive Strike" • "Intercept Enemy AC" • "Defeat The Invading Force" • "Attack The Advancing Force"
Time - 04:00 "Shutdown Defense Systems" • "Destroy AC Sight Hawk" • "Destroy AC Heaven's Ray" • "Eliminate Airborne Force" • "Safeguard Industrial Area" • "Defeat Jack-O" • "Underground Investigation" • "Shutdown Internecine" • "Destroy The Internecine" • "Eliminate AC Intruder" • "Stop Last Assault Attempt" • "Destroy The Pulverizer"