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Hidden Bunker in Arc Raiders is a newly introduced Map Condition that challenges players with a multi-step puzzle located on the Spaceport Map. Below is a concise breakdown of the community’s current understanding of how it works:
A fresh “Map Condition” has arrived in ARC Raiders, and this one turns the entire lobby into a race against time. Everyone is sent scrambling across Spaceport to uncover and unlock the mysterious Hidden Bunker. The twist? You’ll need to complete multiple dangerous tasks before you can claim whatever waits inside.
This isn’t your usual loot sweep—it’s a coordinated puzzle that practically demands teamwork. Below, we’ll guide you through how to open the Hidden Bunker on Spaceport and what to expect once you access it.

This event is chaotic and competitive. Every player in the lobby will be going after the same objective, so going in with the right equipment and mindset is crucial. Unless you know the mechanics extremely well, avoid playing as a hostile solo—cooperation massively increases your odds of success.
To unlock the bunker, you’ll first need to activate four antennas scattered around Spaceport. These are clearly marked on your in-game map with a white satellite symbol, making them easy to locate. While we’ve shown an example location below, the actual antenna spawns can vary each raid.

Once you activate an antenna, two things happen instantly:

This is where teamwork becomes invaluable. Whether you’re pairing up with other solos or running with a dedicated squad, having backup makes fighting off ARC drones far more manageable.
After all four antennas have been activated, everyone in the match will see a new notification: “The Hidden Bunker is now open.” However, the game won’t show the bunker’s location on any map.

The bunker can be found between the Fuel Lines and Fuel Processing POIs. Even though it’s described as “hidden,” the massive industrial hatch stands out against the sand. Once the antennas are complete, immediately make your way there. There are several entrances, but all are situated close together.
Entering the bunker is only part one. Inside, you’ll find eight data terminals—each with a small indicator light above it. Your task is to download the data from every single terminal.

To download, interact with an active terminal and remain near it until the transfer completes. According to current community findings, a single player must retrieve all data files from all eight terminals. Assign one teammate as the “data carrier” while the rest defend the room and secure all entrances.
Once the data from each terminal has been retrieved, the next stage of the puzzle is still undetermined. The ARC Raiders community is actively working together—primarily through the official Discord—to uncover the remaining steps. This has quickly become one of the most exciting collaborative challenges Embark Studios has added to the game.