ARC Raiders: How to Unlock the Hidden Bunker on Spaceport

If you’ve loaded into ARC Raiders and spotted the “Hidden Bunker” map condition on Spaceport, you already know something big is going down. The event isn’t just a regular loot run—it’s a coordinated puzzle and survival challenge that has the entire lobby scrambling to unlock one of the most mysterious underground locations in the game.

Unlocking the Hidden Bunker requires teamwork, patience, and a fair amount of firepower. It’s one of those rare events that really brings the whole raid together, whether you’re cooperating or competing. If you want to uncover what’s inside (and maybe walk away with some top-tier loot), you’ll need to know every detail of the process—from activating antennas to retrieving data deep underground.

Before we dive in, if you want to buy ARC Raiders coins, check out PVPBank. Having some extra currency can help you gear up with the best equipment before tackling the Hidden Bunker challenge. It’s a solid way to stay ahead in a game where preparation often means survival.

Let’s break down everything you need to know about how to unlock the Hidden Bunker on Spaceport in ARC Raiders.

Understanding the Hidden Bunker Map Condition

The Hidden Bunker isn’t always available—it’s a special map condition that occasionally activates on the Spaceport map. When it’s active, you’ll notice a notification at the start of the match or see “Hidden Bunker” listed as the current condition.

During this event, several key tasks become available, and the lobby collectively works to complete them. But make no mistake—this is still ARC Raiders. Even if everyone’s chasing the same goal, competition and chaos are inevitable.

Your objective?
Activate four antennas scattered across the Spaceport map to open the bunker door. Once that’s done, get there first, survive the fight, and loot the place clean.

Step 1: Prepare Before You Drop

The Hidden Bunker event is one of the most dangerous activities in ARC Raiders right now. Between drones, other raiders, and environmental hazards, you’ll need to show up ready for a fight.

Here’s what every veteran player brings:

• Ziplines: Some antennas spawn behind locked or elevated areas. Ziplines are essential to reach them.

• Strong Armor: You’ll take heavy fire both from AI and players. Don’t skimp on protection.

• Reliable Weapons: Bring a primary gun you’re comfortable with and a secondary for close combat.

• Medkits and Repair Tools: Once you’re in the bunker, healing options become limited.

• Good Squadmates: If you’re solo, good luck—you’ll need either speed or stealth to make it out alive.

Remember, you’re not just fighting AI here. Other squads are gunning for the same objective and loot. Treat every player you see as both a potential ally and a likely threat.

Step 2: Activate the Four Antennas

The antennas are the first puzzle piece in unlocking the Hidden Bunker. When you load into Spaceport during the event, open your map and look for small antenna icons scattered across different parts of the area.

Each icon marks a potential antenna spawn location. There will be four total, but their exact positions can vary each round.

How to Activate the Antennas

1. Approach an antenna and start the activation process.

2. The moment you begin, waves of ARC drones will spawn nearby. Take them out fast.

3. After clearing enemies, interact with the antenna again and select “Send unlock signal.”

4. Once successful, the antenna will stay active for the remainder of the match.

Pro tip: You don’t need to activate all four yourself. The entire lobby contributes, meaning different teams can handle different antennas. It’s a rare moment where cooperation might actually pay off—at least until the bunker opens.

Step 3: Track the Bunker Unlock Notification

After all four antennas have been activated, a raid-wide announcement goes out. You’ll see and hear a message saying something like “The Hidden Bunker has been unlocked.”

That’s your cue to move—and fast.

Every raider in the match now knows the bunker is open, so you’ll be racing the entire lobby to reach it first.

Step 4: Find the Hidden Bunker Entrance

The Hidden Bunker entrance is located on the western side of Spaceport, in the rocky fields east of the Fuel Processing point of interest. Look for a large, circular hatch set into the sand—it’s hard to miss once you’re close.

Sometimes there are multiple entrances clustered in the same area, but they all lead to the same underground network.

Make sure your weapons are loaded before heading down. The moment you step inside, you’ll attract attention—from both enemy players and AI.

Step 5: Explore the Hidden Bunker Interior

Inside the bunker, you’ll find a dark, metallic labyrinth filled with weapon crates, ammo boxes, and mysterious terminals. It’s eerie and atmospheric—exactly the kind of place ARC Raiders loves to throw surprises at you.

There are eight data terminals scattered throughout the bunker. These are interactive consoles that let you download data for experience points and possibly unlock deeper story elements later on.

How to Download Data

1. Approach a terminal and hold the interaction button to start the data download.

2. Stay close while the progress bar fills—moving too far away will cancel it.

3. Once completed, hit “Retrieve Data” to collect your XP reward.

Each terminal gives around 500 XP, making this one of the best side activities to boost your progression mid-raid.

However, downloading data isn’t the endgame—there’s still more mystery behind what this data is used for.

Step 6: Loot Everything You Can

The Hidden Bunker loot is what everyone’s here for. Once you clear the area of enemies, you’ll find multiple weapon crates, ammo boxes, and rare blueprint containers scattered across the rooms.

Some players have reported finding high-tier weapons and crafting materials down here, though loot quality seems to scale based on difficulty and lobby competition.

Grab whatever you can carry—but don’t get greedy. Other raiders can still storm the bunker at any time. Move efficiently and plan your escape route.

Step 7: Survive and Extract

All the loot in the world means nothing if you can’t get it out. Once you’ve gathered your rewards, make your way back to a safe extraction zone.

Keep an eye on the radar—other teams might be camping exits waiting for easy kills. The best strategy is to move fast and unpredictable, using alternate routes if available.

A clean extraction after looting the bunker is one of the most satisfying moments in ARC Raiders right now.

Hidden Bunker Puzzle Progress: What We Know So Far

The community is still piecing together what comes after retrieving all the data from the bunker terminals. Current theories suggest these terminals may link to future updates or global community events.

Players have been collaborating on the MetaForge Discord, sharing clues and progress about additional steps or secret rewards hidden deeper within the bunker’s system.

This evolving mystery is one of the coolest aspects of the Hidden Bunker—it turns the event into a live puzzle that everyone helps solve together.

Veteran Tips for Mastering the Hidden Bunker Event

From someone who’s run the bunker multiple times, here are a few hard-earned lessons to save you pain (and respawns):

• Use teamwork, even temporarily. Cooperation during antenna activation can make the early phase smoother.

• Avoid early combat if solo. Let other squads activate antennas first, then swoop in when the bunker opens.

• Bring ziplines every time. Some antennas are unreachable without them.

• Prepare for close-quarters combat. Inside the bunker, you’ll fight in tight corridors where shotguns and SMGs shine.

• Stay near exits. Always have an escape plan—especially once word gets out that you’re looting.

Why the Hidden Bunker Matters

The Hidden Bunker event isn’t just about loot—it’s about what it represents. ARC Raiders has built a dynamic world that rewards curiosity and teamwork. These map conditions keep the experience fresh, pushing players to explore and collaborate in ways that standard raids don’t.

The mix of mystery, competition, and strategy makes the Hidden Bunker one of the most exciting additions to the game so far. It’s a glimpse at how Embark Studios plans to evolve ARC Raiders into a living, breathing ecosystem of evolving challenges.

Unlocking the Hidden Bunker on Spaceport in ARC Raiders is one of the most thrilling experiences the game has to offer right now. It’s not just another event—it’s a community-driven puzzle that demands both brains and brawn.

If you’re planning to dive in, gear up properly, grab a reliable squad, and make sure your weapons and loadouts are optimized. For players who want a little head start, consider grabbing extra resources and buying ARC Raiders coins from PVPBank—a simple way to stock up before heading into the chaos.

The bunker may be hidden, but once you step inside, you’ll understand why players can’t stop talking about it. Whether you’re there for the loot, the mystery, or the thrill of competition, the Hidden Bunker event captures everything that makes ARC Raiders worth playing.