Horizon Zero Dawn offers diligent treasure hunters a chance at the best armour in the game. Here's how to get it - and where to find all the power cells you'll need on the way.
Horizon Zero Dawn includes a side quest called Ancient Armor, which is rated level 25 but unlocks in the starting zone if you stumble across it early enough. As the name suggests, the reward is a suit of pre-apocalypse armour. It's the best outfit in Horizon Zero Dawn by a wide margin, but you need to find a number of power cells to find it. (That's "energiezellen", if you're playing the German version and landed here anyway; hallo, by the way.)
It's worth tracking down those power cells though. The Shield-Weaver Outfit can't be modified, but it has admirable resistances in all categories, easily putting it on a level with anything you could cobble together in Horizon Zero Dawn. Best of all it will completely repel a huge amount of damage before needing to recharge. That means you can be hit and take zero damage, over and over again, provided you can scurry away for a few seconds between blows. It doesn't look like total arse, either (looking at you, Silent Hunter sets) and even has a cool shimmering effect.
On the page below we'll tell you exactly how to start the Ancient Armor side quest, where to find the power cells you need to complete it, and how to solve the puzzles between you and the best armour in Horizon Zero Dawn.
Not what you were looking for? return to our Horizon Zero Dawn guide hub for tips on where to find the best weapons in Horizon Zero Dawn or a checklist of all the content in The Frozen Wilds DLC.
Some spoilers for Horizon Zero Dawn mission and dungeon names follow.
Find the Bunker ruins and hololocks
To trigger the Ancient Armor quest, you can find a power cell for the objective "find a use for the power cell", or complete Horizon Zero Dawn’s prologue missions, so you can leave the Mother's Embrace zone and venture into the wider Sacred Lands map to stumble across the main quest location.
In either case, you'll want to exit Mother's Embrace and head north along the main road, keeping an eye out for the rainbow-like ruins symbol on your radar and map. The location you’re looking for is Bunker, and it's on the western side of this area, towards the mountainous border with Mother's Embrace and the Carja Territories.
Descend into the Bunker dungeon (don’t miss the Metal Flower down here) and proceed to the end of the area to find a locked room housing the titular Ancient Armor. Facing inwards with your back to the dungeon entrance, look to the right to find one of the hololocks you’ll occasionally encounter in Horizon Zero Dawn.
This hololock requires two power cells before you can open it, and you can grab both before the end of the prologue or return for them later (we list all power cell locations further down the page; don't worry).
Once you bypass this first hololock inside Bunker, you’ll find a second one stands between you and the ancient armor. You need three more power cells for this lock; unfortunately, the remaining power cells are found in dungeons you cannot access until you reach the associated critical path quest. Again, power cell locations are listed further down the page.
Hololock solutions and looting the Shield-Weaver Outfit
Once you have all five power cells, return to the Bunker dungeon and interact with the two darkened interfaces on the first door seal to completely power the hololock.
Turn the hololock dials so they match the times indicated on the nearby monitor. From left to right, you want the lock to point up, right, down, left and up again.
This grants you entry to the second seal. Again, put the power cells in the darkened hololock interfaces, then turn the holodeck dials to match the angles indicated on the display – from left to right: right, left, up, right and left.
With both sets of hololocks opened thanks to the energy of all five power cells, you’ll receive a treasure box. Check the treasure box section of your inventory and loot the new package to grab the Shield-Weaver Outfit.
Horizon Zero Dawn power cell locations - how to find them all
You'll need to progress along Horizon Zero Dawn's critical path quite a way in order to collect all the power cells for the Ancient Armor sidequest. It's worth it for the Shield-Weaver outfit, though; it will stand you in good stead for the tougher side quests and endgame.
- Ruins power cell – any time after Aloy reaches adulthood
The first power cell you can collect in Horizon Zero Dawn is in the Ruins dungeon in Mother’s Embrace (the starting area). This is the dungeon Aloy explored as a child during the opening tutorials. Return to Ruins as an adult and look for areas where stalactites and stalagmites form a barrier; smash these with your spear to loot the rooms beyond. One contains a power cell. Don’t miss the Metal Flower down here while you’re at it.
- All-Mother power cell – during or after main quest The Womb of the Mountain
The second power cell can be found while still in Horizon Zero Dawn’s opening prologue. When Aloy awakens in All-Mother, search the chambers around the angled corridor (check the map) to find a power cell near the crawlspace tunnel. You can return here later if you miss it; if you fast travel in the door may be closed, but you can open it again by fast travelling to a more distant location and walking or riding back.
- Maker’s End power cell – during or after main quest Maker’s End
The third power cell we found in Horizon Zero Dawn is at the very top of the tower in Maker’s End, which you explore during the critical path quest of the same name. Once you reach the conference room which is the final objective of this dungeon, jump up above the lift shaft and follow the climbing path to find the power cell at the absolute highest level.
- The Grave-Hoard power cell – during or after main quest The Grave-Hoard
A fourth Power Cell can be found in the ruin called The Grave-Hoard, which is first accessible during the critical path quest of the same name. Poke into side rooms to loot it; it's not very well hidden.
- GAIA Prime power cell – during or after the main quest The Mountain that Fell
The final power cell is in GAIA Prime, which you can’t access till right at the very end of the main quest. This is best done the first time you visit the dungeon and checkpointing is active. Go right through to the room where you view a hologram and collect the quest item, then look for the zipline back to the start but don’t take it. Instead go back outside towards the stairs and examine the ledges on the abyss side for the start of a climbing path leading down. Once on the lower level, follow the purple lights to find the fifth power cell. Walk down in the direction of travel of the zip line to find the path back to the quest objective.
That should be everything you need to track down all the power cells, unlock the Bunker seals and grab Shield-Weaver, the best outfit in Horizon Zero Dawn. If you do need any further help with the Ancient Armor side quest, just let us know.
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