ARC Raiders has two separate objectives that can be confused as “hidden bunker” puzzles: Spaceport’s rotating Hidden Bunker map condition is opened by activating four rooftop antennas, while Blue Gate’s three-battery Access Capacitor door is part of the A Dead End quest. Check the live map-condition schedule for Spaceport availability; the Blue Gate quest leads to a Dusty Film Reel.
How to open the Hidden Bunker on Spaceport
Hidden Bunker is a rotating Spaceport map condition, not a location that is necessarily available every match. Check the official map-conditions page before queueing. It lists current and upcoming conditions, and availability can depend on the selected server region. The schedule is time-sensitive: on October 4, 2026, the displayed schedule showed a Spaceport Hidden Bunker window from 11:00 AM to noon. Treat that as a dated example, not a recurring or permanent time.
- Queue for Spaceport while Hidden Bunker is active.
- Find and activate four rooftop antennas. Their exact rooftops can vary; use the map to locate antennas that have not yet been activated.
- Interact with an antenna to start its activation. ARC enemies will spawn, so be ready to deal with them.
- After handling the enemies, interact with the antenna again to send the unlock signal.
- Repeat as needed until all four antennas are activated. Progress is shared across the lobby, so other players can contribute to the objective.
The Hidden Bunker database reference and GamesRecon walkthrough describe the four-antenna objective. If an antenna is already complete, move on to one that remains unactivated.
Where the Spaceport bunker entrance is
The bunker is southwest of the Departure Building, in the southwest part of Spaceport near the Fuel Processing and Fuel Lines area. The main entrance is described in that vicinity, with additional side entrances nearby. Use the map and the bunker area landmarks to orient yourself; neither the route nor the entrance area should be treated as safe. Other players may be competing for access, and ARC patrols can be present.
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Location details are covered by the database reference and GamesRecon’s location guide.
What to do with the bunker terminals and data
Inside, use a ready data terminal to begin a download. Stay close while it runs, then retrieve the data once the terminal completes. GameSpot’s November 8, 2025 walkthrough reported a reward of 500 XP per terminal download; this is an in-game reward, not a player statistic.
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The available walkthrough coverage does not establish a confirmed purpose or final destination for the retrieved data. Treat the download as a terminal interaction with an XP reward, rather than assuming it completes a further puzzle or unlocks a particular destination. See GameSpot’s walkthrough and GamesRecon’s guide for terminal steps.
How to open the Blue Gate battery door
The Blue Gate puzzle is separate from Spaceport’s Hidden Bunker event. It is part of the A Dead End quest in MANTIKOR’s underground Security Wing. Its Access Capacitor door needs three batteries; opening it lets you reach the film equipment and obtain the Dusty Film Reel.
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- Follow the A Dead End quest to MANTIKOR’s underground Security Wing on Blue Gate. Routes into the underground can vary, so follow the in-game objective prompts.
- Find three batteries and use them on the Access Capacitor door.
- Go through the opened door and use the film equipment to obtain the Dusty Film Reel.
- Secure the reel, extract, and deliver it to Shani.
Expect hostile encounters, and be prepared for item spawns or routes to differ. PC Gamer’s February 24, 2026 A Dead End walkthrough covers the underground route, batteries, and film objective.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Spaceport Hidden Bunker vs. Blue Gate Access Capacitor
| Detail | Spaceport Hidden Bunker | Blue Gate Access Capacitor |
|---|---|---|
| Activity | Rotating Spaceport map condition | A Dead End quest step |
| What opens access | Four rooftop antennas; lobby progress is shared | Three batteries for the Access Capacitor door |
| Goal | Download data from bunker terminals | Obtain the Dusty Film Reel, extract, and deliver it to Shani |
| Unresolved or established outcome | The retrieved data’s further purpose is not confirmed in the cited walkthrough coverage | The quest objective is to recover and deliver the reel |
The game’s official map-conditions page lists Hidden Bunker with Spaceport and Locked Gate with The Blue Gate, but these activities have different objectives: the Blue Gate battery door is not another entrance to the Spaceport bunker.
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