Line in the Sand quest in ARC Raiders will take players to the Buried City map, where they'll need to investigate who orchestrated a train robbery and find the stashed Thruster Valves. The objectives for this quest can become vague, as players will be left wondering where to go next. Well, fret not, as I'll be guiding you to the exact locations where you need to go to complete the Line in the Sand quest in ARC Raiders.

Collision Course Quest ARC Raiders
ARC Raiders: Collision Course Quest Walkthrough

The Collision Course quest in ARC Raiders will require players to destroy a Comet without it blowing up to retrieve a Comet Ignitor.

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Locating the Train That Never Reached Marano Station

Location of Derailed Train Line in the Sand Quest ARC Raiders

The first objective for the Line in the Sand quest in ARC Raiders will take players directly northwest of the Grandioso Apartment, next to some derailed trains. Simply head to the location above, and make sure to look at the windows in the apartments, as I've gotten sniped multiple times from that location while I was completing the quest. However, that just might be because I get matchmade into PvP lobbies.

Derailed Train Line in the Sand Quest ARC Raiders

Once you arrive at the location marked above, you'll come across some derailed trains covered in sand. The objective will be completed automatically once you're in their vicinity.

How to Find Who Orchestrated the Robbery

Location of Stashed Thruster Valves Line in the Sand Quest ARC Raiders

Right after checking out the derailed trains that couldn't reach Marano Station, head northeast from the location to this little tower that I've marked on the map above.

Stashed Thruster Valves Line in the Sand Quest ARC Raiders

Make your way inside the little buried tower, and you'll find a container to interact with. After searching the box, you'll get the Marano Market Business Card, and this will complete the "find who orchestrated the robbery" objective for the Line in the Sand quest in ARC Raiders.

Where to Find the Stashed Thruster Valves

Find Where Thruster Valves Were Stahed Line in the Sand Quest ARC Raiders

The next objective for the Line in the Sand in ARC Raiders tells players to "find out where the thruster valves were stashed." While the objective does not clue you in on where to go next, since you've received a Marano Market Business Card while completing the previous objective, you'll need to go to Market Ruins POI next.

Market Ruins Line in the Sand Quest ARC Raiders

The Market Ruins are located between the Hospital and Dune's End, and consist of a group of broken building structures.

While I was heading to the area, I encountered a Bastion that was roaming there. So, be on your toes and also watch out for any hostile raiders that may be camping on the top floors of the Hospital.

Once you arrive in the area, the objective will be marked as complete. If you're like me and were wondering what the Marano Market Business Card is used for, well, nothing really. All it does is act like a trinket that you can sell once you extract.

Where to Search the Basement of the Merchant's Nearby Apartment

Merchant Apartment's Basement Location Line in the Sand Quest ARC Raiders

For the final objective, "search the basement of the merchant's nearby apartment," all you need to do is go east down the dusty road from the Market Ruins till you arrive at an abandoned apartment (location marked on the map).

Taking Photo Merchant Apartment's Basement Location Line in the Sand Quest ARC Raiders

Head inside the apartment and you'll find an elevator shaft with a zipline that directly leads to the basement. Keen-eyed players might have noticed that this also happens to be one of the spawn points for players. Simply interact with the stack of boxes in the room, and you'll complete the final objective for the Line in the Sand quest.

Line in the Sand Quest Complete ARC Raiders

Now all you need to do is extract from the map, either using the subway extraction or via a Raider Hatch. Either way, you'll receive 2x Exodux Components, 2x Magnetic Accelerators, and 2x Magnetrons for completing the Line in the Sand quest in ARC Raiders.

While you aren't required to extract to complete the quest, players have reported the quest progression being bugged if they were killed after completing the quest, or decided to exit the match via Surrendering. So, make sure to properly extract after completing the quest in a match to avoid getting your progress bugged.

ARC Raiders Tag Page Cover Art
Extraction
Shooter
Third-Person Shooter
Survival
Systems
Top Critic Avg: 87/100 Critics Rec: 91%
Released
October 30, 2025
ESRB
Teen / Violence, Blood, In-Game Purchases, Users Interact
Developer(s)
Embark Studios
Publisher(s)
Embark Studios
ARC Raiders release window announced with launch plans

WHERE TO PLAY

DIGITAL
PHYSICAL

Multiplayer
Online Multiplayer, Online Co-Op
Cross-Platform Play
Full
Cross Save
Yes - via Embark ID
Number of Players
Single-player
Steam Deck Compatibility
Verified
PC Release Date
October 30, 2025
Xbox Series X|S Release Date
October 30, 2025
PS5 Release Date
October 30, 2025
Genre(s)
Extraction, Shooter, Third-Person Shooter, Survival
How Long To Beat
91 hours
X|S Optimized
Yes
File Size Xbox Series
36.7 GB