The Hidden Bunker in Arc Raiders is one of the more challenging map modifiers, requiring coordination, timing, and knowledge of enemy behavior. Here’s a detailed guide based on how most players experience it in practice.
What is the Hidden Bunker?
The Hidden Bunker is a map modifier located on the Spaceport map, west of the Departure Building. Essentially, it’s a complex bunker that can be accessed after activating four rooftop antennas scattered around the map. Once unlocked, it offers multiple loot terminals and higher difficulty combat encounters.
In general, the Hidden Bunker changes the normal flow of a Spaceport match: there are fewer active Return Points, no Raider Hatches, and a focus on activating rooftop antennas before engaging the bunker itself.
How do you unlock the Hidden Bunker?
Unlocking the Hidden Bunker involves several steps:
Locate the antennas: Four rooftop antennas spawn randomly near the center of the map. You can spot unactivated antennas on your map as icons. Zooming out can make it easier to identify them, especially in busy matches.
Activate the antennas: Each antenna requires two interactions:
The first interaction triggers a brief alarm, causing Wasp and Hornet ARC enemies to spawn. Most players find it easier to fight these enemies immediately rather than risk them overwhelming later.
The second interaction completes the antenna. A progress message will appear for the entire lobby, showing your shared progress.
Shared progress: In general, multiple players can split antenna activation. One player could do all four, but most squads divide the work for efficiency. Once all antennas are activated, the Hidden Bunker becomes visible on the map.
Where are the entrances?
After unlocking, there are multiple entrances to the Hidden Bunker, all located just west of the Departure Building. Usually, squads will coordinate to enter through different doors to cover the area and manage the incoming enemy waves more effectively.
How does the bunker raid work?
Once inside the bunker, your goal is to retrieve data from four terminals. The process works like this:
Start a download: Interact with a terminal to start a download sequence. You can track progress on the terminal’s screen.
Retrieve data: Once the download completes, you can interact with the terminal again for a limited time to collect the data.
Repeat four times: Each terminal holds a unique data set, requiring four separate interactions at different terminals to fully complete the raid.
The bunker is defended by two Bastions and one Bombardier. In general, most players approach this by taking cover strategically, using grenades or abilities to manage the Bastions while avoiding Bombardier attacks.
What’s the difficulty like?
The Hidden Bunker has a 2X Trials multiplier. Most players notice a significant increase in enemy difficulty compared to standard Spaceport runs. Common strategies include:
Coordinating weapon loadouts so the team can handle both Bastions and Bombardiers.
Timing abilities to interrupt ARC spawns when activating antennas.
Staying aware of the 40-minute raid limit. Most squads aim to complete all data downloads within 30–35 minutes to avoid rushing at the end.
Tips from experienced players
Divide tasks: One common approach is to assign antenna activations to separate players while others secure Return Points.
Map awareness: Zooming out on the map makes spotting antennas easier and prevents wasting time searching.
Enemy management: The first activation of each antenna spawns enemies. Most players deal with these immediately rather than delaying, as Wasp and Hornet ARC enemies can accumulate if ignored.
Data retrieval order: Plan which terminal each player will handle to reduce travel time inside the bunker.
Additionally, for players looking to expand their loadout options quickly, some choose to
buy ARC Raiders blueprints fast delivery on U4N. In general, having the right gear before entering the bunker can make a big difference in efficiency.
Common player mistakes
Splitting too much: Some squads split into four separate groups to activate antennas and end up being overwhelmed by ARC spawns. Usually, two groups work best.
Ignoring alarms: Skipping enemy waves when activating antennas can make the bunker raid much harder later.
Poor terminal planning: Trying to retrieve data from terminals in a random order often leads to backtracking and wasted time.
The Hidden Bunker is a high-difficulty map modifier that rewards careful planning and teamwork. Key points to remember:
Four antennas must be activated to unlock the bunker.
Antenna activation spawns enemies that must be handled promptly.
Bunker contains four terminals for data retrieval, each requiring a separate interaction.
Two Bastions and one Bombardier defend the bunker.
The raid lasts up to 40 minutes, so timing is critical.
Most players approach this map modifier by dividing antenna tasks, managing enemy spawns, and coordinating terminal interactions. Proper preparation, gear, and strategy make the difference between a successful raid and a failed one.
What You Should Know:
Arc Raiders Stable Stock 2 Blueprint Guide