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"This isn't a cave - it's a ruin."
―Aloy, discovering the Bunker

Ancient Armory is a side quest in Horizon Zero Dawn.

Synopsis

Tucked into the Sacred Lands of the Nora is a long-forgotten bunker of the Old Ones that contains a curious set of armor sealed away behind locked Ancient Doors. To gain access, Aloy must collect five Power Cells located throughout the world.

Obtaining the quest

This quest will be activated either the first time Aloy comes across one of the Power Cells during the main quest or when she visits the Bunker, depending on which happens first.

  • If Aloy visits the rock formation east of Mother's Rise before finding a Power Cell, the quest will be triggered after using handholds to climb down into an underground lake following the path into the underground bunker.
  • If Aloy doesn't visit the bunker, the quest will start automatically when she picks up one of the Power Cells required to open the locked Ancient Doors. Four of the Power Cells can easily be obtained during the main quest, but the fifth requires Aloy to revisit the ruins she fell into and found her Focus in as a child. The first Power Cell can be obtained during The Womb of the Mountain.

Power Cells

First Cell

One Power Cell is found in the underground facility that Aloy fell into as a child. This location can be revisited at any time during the game. Return to the ruins near Mother's Watch and make your way through them. Eventually you will come to a locked door that must be pried open with your spear. Beyond that there will be another doorway which is blocked by stalactites. Simply smash these with your spear and you will find the Power Cell on a table at the back of the room.

Second Cell

The second Power Cell is in All-Mother Mountain. After the Proving quest, you will end up here at the beginning of the main quest The Womb of the Mountain. Instead of following Teersa to the left, go straight out of the room where you get your equipment back until you find a locked red door. Look to the left, crawl down a tunnel lit with candles, and you will find the Cell in the room at the end. If this Cell is not obtained during the Womb of the Mountain quest, it will not be accessible again until the main quest The Heart of the Nora. The gate to Mother's Watch will be closed and All-Mother cannot be entered until then.

Third Cell

The third cell is in the Maker's End ruin which you will visit as part of the Maker's End main quest. Climb all the way to the very top of the ruins to locate Ted Faro's office. Once there, instead of following the quest objective and examining the data storage system, turn around and locate the yellow handholds leading up the ruined sky scraper. Follow these all the way to the top and find the Power Cell there. Use the rappel to return to Ted Faro's office and continue the quest.

Fourth Cell

The fourth cell is in the Grave-Hoard, where you will go to as part of the Grave-Hoard main storyline quest. Once you have restored power to the Ancient Door and gone through it, look around until you spot a tell-tale green diamond, indicating the hidden Power Cell. You will need to pass this cell in order to get to the next part of the facility, so it is perhaps the least difficult one to miss.

Fifth Cell

The final Power Cell requires the quest The Mountain That Fell. Go to GAIA Prime. Instead of taking the zip line, go to the left of the zip line and carefully move to the edge of the cliff. There are hidden handholds leading up to a hidden-in-plain-sight area where you will find a purple-lit hallway. The Power Cell sits on a shelf to the right at the very back.

Opening the locks

Take your five Power Cells back and slide two into the vacant slots. Now you have to solve a puzzle where you have to rotate each of the five holograms into a certain position. A display to the right will show five 24-hour codes in military time. Imagine each hologram as a clock and turn them to their respective position. The first door is open, and on the right of the new room, you will find five more holographic locks. Use the last three Power Cells, and this time, a panel on the left will show angle measurements (90 degrees, 270 degrees, etc). Again, just turn the locks to these positions (from left to right) right, left, up, right, left. Now the final barrier is down and you can just walk in and claim it.

Objectives

  1. Find a Use for the Power Cell
  2. Restore Power to the Bunker Door
  3. Investigate the Bunker
  4. Restore Power to the Mechanism
  5. Retrieve the Ancient Armor

Walkthrough

Ancient Armory - Very Hard - No Damage - Video Guide

Ancient Armory - Very Hard - No Damage - Video Guide

Gallery

Horizon Zero Dawn Quests
Main Quest A Gift from the Past - Lessons of the Wild - The Point of the Spear - Mother's Heart - The Proving - The Womb of the Mountain - A Seeker at the Gates - The War-Chief's Trail - Revenge of the Nora - The City of the Sun - The Field of the Fallen - Into the Borderlands - The Sun Shall Fall - Maker's End - The Grave-Hoard - To Curse the Darkness - Deep Secrets of the Earth - The Terror of the Sun - The Heart of the Nora - The Mountain That Fell - The Looming Shadow - The Face of Extinction
Side Quests A Daughter's Vengeance - A Moment's Peace - Acquired Taste - Ancient Armory - Blood on Stone - Cause for Concern - Farewell - Death from the Skies - Fatal Inheritance - Heap of Trouble - Honor The Fallen - Hunters' Blind - In Her Mother's Footsteps - Insult to Injury - Queen's Gambit - Redmaw - Robbing the Rich - Sun and Shadow - Sunstone Rock - The Forgotten - Traitor's Bounty - Underequipped - Weapons of the Lodge
Errands A Curious Proposal - Collateral - Deadliest Game - Demand and Supply - Hammer and Steel - Healer's Oath - Hunting for the Lodge - In Foreign Lands - Luck of the Hunt - Odd Grata - Sanctuary - Shortage of Supplies - Sun's Judgment - To Old Acquaintance
Activities Bandit Camps Blackwing Snag - Devil's Thirst - Gatelands - Hollow Fort - Shattered Kiln - Stone Yield FW - Two-Teeth
Cauldrons Cauldron RHO - Cauldron SIGMA - Cauldron XI - Cauldron ZETA
Hunting Grounds Greatrun - Nora - SnowchantsFW - Spurflints - Sun Furrows - Valleymeet
Tallnecks Devil's Thirst - Copper Deeps - FrostfiguresFW - Rustwash - Spearshafts - Sun-Steps
Horizon Zero Dawn: The Frozen Wilds Quests
Side Quests Firebreak - For the Werak - Frontier Justice - Into the Frozen Wilds - The Forge of Winter - The Hunters Three - The Shaman's Path - The Survivor - Waterlogged
Errands A Secret Shared - Ikrie's Challenge - Geared Up: Forgefire - Geared Up: Icerail - Geared Up: Stormslinger - Out of the Forge - The Claws Beneath