The Hidden Bunker is one of many events that take place inside the maps of ARC Raiders. During the Hidden Bunker event, the Spaceport map will change, and a couple of rooftop antenna symbols will appear on the map, indicating that they have something to do with the Hidden Bunker event. Here’s everything you need to know about the Hidden Bunker event in ARC Raiders, including where to find the Hidden Bunker and how to unlock it.
Hidden Bunker Location In ARC Raiders
You can reach the Hidden Bunker in ARC Raiders near the Departure Building location. It’s a high-risk area, so come prepared, especially during the Hidden Bunker event, as there will be a lot of enemies protecting the Hidden Bunker’s entrance.
The Hidden Bunker in ARC Raiders is a large underground area spanning the Fuel Processing and Fuel Lines areas. There are multiple entrances to the Hidden Bunker, and all will lead to each other.
Once you come close to the Hidden Bunker, a pop-up message will appear announcing you have reached the Hidden Bunker in ARC Raiders. However, before reaching the Hidden Bunker, you have to activate all the rooftop antennas scattered around the map. Without them, the Hidden Bunker would not open its gates.
Players can work together to activate the antennas and open the Hidden Bunker.
How To Open The Hidden Bunker In ARC Raiders
At the start of each raid, four antenna symbols will appear on the map. They are random, so you can only see them inside the raid, once the run has started. Check the nearest antenna symbol and travel to it.
Keep in mind that these are rooftop antennas, which can only be found on rooftops. Ziplines can help if you’re planning to help activate the antennas, as some of these rooftops aren’t easily accessible. It’s also important to note that during the Hidden Bunker event, there are:
- Fewer active Return Points
- No active Raider Hatches
After you reach a rooftop antenna, interact with it to establish a connection, which will spawn a couple of ARC enemies in ARC Raiders.
Defeat them, and you will be able to interact with the rooftop antenna again to send an unlock signal to the Hidden Bunker in ARC Raiders. Activating all four rooftop antennas will unlock the Hidden Bunker, where there is more to do underneath the ground.
- Released
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October 30, 2025
- ESRB
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Teen / Violence, Blood

