ARC Raiders: How to Open the Hidden Bunker

Published: 21:02, 21 December 2025
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ARC Raiders: How to Open the Hidden Bunker
ARC Raiders: How to Open the Hidden Bunker
ARC Raiders: How to Open the Hidden Bunker

The Hidden Bunker is back in ARC Raiders, and here's how you open it to get some of the best loot in the game.

ARC Raiders has been popping off, with Embark releasing the second seasonal update for the game, Cold Snap. The Cold Snap update is centered around the winter season, which includes the addition of a new mode called Cold Snap.

Aside from Cold Snap, Embark has also brought back two puzzle events, the Locked Gate and Hidden Bunker events. Both of these events require all the players in the lobby to work together to get some of the best loot in the game.

If you're looking to snatch a Vulcano blueprint or some epic loot, then here's a guide on how to open the hidden bunker in ARC Raiders.

How to Open the Hidden Bunker in ARC Raiders

The Hidden Bunker is a locked POI on the Spaceport map. Once the game mode goes live every 8 hours in ARC Raiders. The bunker is located near the Departure POI of Spaceport.

To open the bunker, players must activate the four antennas spread around the map. You'll find the antennas marked with a white antenna logo on your map. Here are all the antenna and bunker entry locations on the Spaceport map:

Metaforge
Bunker and Antenna Locations on Spaceport in ARC Raiders
Bunker and Antenna Locations on Spaceport in ARC Raiders

Make your way to an antenna on the top of the POIs; you'll find an Establish Connection prompt. Start the connection process; a beeping sound will emit through the box, spawning Wasps and Hornets. Take out the Hornets and Wasps, and the antenna will be ready to send the unlock signal.

Once you press the Unlock Signal button, the antenna will be activated. Now, in the same method, unlock all remaining antennas on the map, and you'll see a 'bunker is unlocked' prompt on your map. Once the bunker is unlocked, head into it and start looting every container you can find.

The Hidden Bunker is the only way of getting the elusive Vulcano shotgun blueprint. Alongside the blueprint, you can also find epic and legendary loot spread throughout the bunker and every other POI on the Spaceport map.

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