Check out our Once Human guide, with a detailed map of the Bunker Door and Access Card locations. Find out what you need to get to the secret area.
In Once Human, there's a hidden Bunker full of secrets just waiting to be explored. But to unlock its mysteries, you'll need a special Access Card. This guide will reveal the bunker's location and what you should pack for your treasure hunt.
In the town of Throughville, located in the southeastern corner of the map in Once Human, there’s a special enemy that will drop a Bunker Access Card. This foe can usually be found in the middle of the city. He’s a bold zombie wearing a dark jacket with a badge on it and light pants. After killing him, investigate the corpse and pick up the access card.
Now, the only thing left is to find the mysterious bunker. The card description says AIDEN, and that’s the only clue you need.
The bunker is near Aiden’s Hideout, just northeast of Throughville. Follow the road and go up the hill. Before you reach the marker on the map, you’ll find a bunker door on the right.
The most important thing to remember before entering the bunker is to make sure you have a grenade in your inventory. The access card can be used just once, and after you exit the bunker, you won’t be able to enter it again.

There will be some monsters and other enemies on level 3 in the bunker, but nothing one person couldn’t handle. Go up the stairs, pass a small room on your left, and enter the main area with hospital beds and medical equipment.
As you reach the end of the room, look closely at the minimap. There will be a passage on your right hidden behind a wall. Use a grenade to destroy the blockade and enter the secret area. It may look like a typical toilet, but there are a lot of goodies inside each cubicle.
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Author: Olga Racinowska
Been with gamepressure.com since 2019, mostly writing game guides but you can also find me geeking out about LEGO (huge collection, btw). Love RPGs and classic RTSs, also adore quirky indie games. Even with a ton of games, sometimes I just gotta fire up Harvest Moon, Stardew Valley, KOTOR, or Baldur's Gate 2 (Shadows of Amn, the OG, not that Throne of Bhaal stuff). When I'm not gaming, I'm probably painting miniatures or admiring my collection of retro consoles.