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How to Complete the Hidden Bunker Map Condition in ARC Raiders

Activate four shared-progress antennas on Spaceport, enter the opened Hidden Bunker, and stay beside a terminal until its download finishes so you can retrieve the data.
WorldARC Raiders Length2 min Posted Quest giverVGSources Team
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To complete the Hidden Bunker map condition, queue into Spaceport while the condition is active, help activate all four rooftop antennas, then enter the opened bunker and finish a terminal download. Antenna progress is shared across the lobby, but each dish requires a second interaction after its ARC defenders are defeated.

Check that Hidden Bunker is active

Hidden Bunker is a Spaceport map condition, not a continuously available campaign quest. Check the current in-game rotation or the official ARC Raiders map conditions page before queuing; its schedule changes, so a fixed timetable may not apply to your region.

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Find and activate the four antennas

Use the map to locate dishes

Open the Spaceport map and look for four antenna markers. Their rooftop locations vary from run to run. Zooming the map fully out may make unfinished markers easier to spot. Other raiders can activate dishes too, and progress is shared across the lobby, so watch map updates and announcements as you move.

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Complete both interactions at each dish

  1. Interact with an antenna to start its activation.
  2. Respond to the alarm and defeat the ARC enemies that arrive, including Wasps and Hornets. Return to the dish if you were forced away.
  3. Interact with the antenna again to send the unlock signal and complete that dish.
  4. Repeat until four dishes have been completed. The bunker then opens for the lobby.

Some dishes are on awkward rooftops and may be difficult or impossible to reach without an in-game zipline. The best order depends on that run’s antenna spawns, access routes, ARC threats, and other squads; there is no established universally fastest route.

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Reach the bunker entrance

Look southwest of the Departure Building, with entrances immediately west of the building. Another useful orientation is the rocky area east of Fuel Processing on Spaceport’s western side. After the four-dish unlock, approach the entrances and enter the newly accessible bunker.

Finish a terminal download and retrieve the data

  1. Interact with a terminal to begin downloading.
  2. Stay close to the terminal until its progress completes. Leaving the vicinity can cancel the download and lock the terminal; a red light indicates it is not ready for retrieval.
  3. When the terminal turns green, interact with it again during the available window to collect the data.

The ARC Raiders Wiki reports eight terminals in the bunker, each downloadable once. Treat the download rooms as contested: other raiders can enter, and the Wiki reports that two Bastions and one Bombardier patrol the entrances. It also lists a maximum round duration of 40 minutes, so leave enough time to complete the download and retrieve the data.

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Sources and patch-sensitive details

Embark Studios’ map conditions page provides the live condition interface. The antenna, terminal, patrol, and round details above are reported by the community-maintained ARC Raiders Wiki (last modified 20 May 2026). The four-marker, shared-progress, and entrance-location details are also corroborated by GameSpot’s Spaceport guide, published 8 November 2025. Practical terminal behavior is also described in GamesRecon’s access guide, published 25 November 2025 and updated 19 July 2026. Game mechanics can change with patches.

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