The train lies on its side beneath a sick, orange sky. You step out, breath clouding, and realize the map in your hand only tells half the story. I stayed until the sun fell to figure out the rest, and now you don’t have to wander blind.
I’ll walk you through every stop Celeste sends you to in the Buried City, in plain language and with exactly what to bring. Think of this as a field notebook: short, practical, and useful whether you’re on PC via Steam, or queuing on console. If you use Discord or the Arc Raiders subreddit, pin this guide to your party chat.
How to Complete the Line in the Sand Quest in Arc Raiders
Most squads drop into Buried City without more than a half-full medkit.
This quest is a light investigative run through old streets and collapsed buildings — not the coastal Riven Tides map. You’ll follow Celeste’s breadcrumbs to recover a Stella Montis hard drive and the transport schedule for Exodus components. Bring mobility and heals: a free loadout or a light personal loadout works, but stock extra Adrenaline Shots, Medical Bandages, and Shield Rechargers. Play on Steam or console? The map markers behave the same; voice your route on Discord if you want a faster clear.
Step 1 — Find Out Why the Train Never Reached Marano Station
Observation: Trains don’t fall off the map by accident; something forced the cars over.
Drop into the Buried City and head to the derailed train marker near Marano Station. Walk up and interact with the wreck — the objective completes automatically. Celeste will ping you with the next lead. This is quick evidence-gathering, not a boss fight, so keep movement tight and watch for patrols.
What is the Line in the Sand quest in Arc Raiders?
Celeste asks you to track down a Stella Montis hard drive tied to stolen Exodus component schedules. It’s a short trail of locations across the Buried City that ends in a photo interaction in a basement. The mission is investigative rather than combative, though stray hostiles will test your heals.
Step 2 — Find Out Who Orchestrated the Robbery
Observation: Towers give good sightlines and hiding spots for clues.
Climb the tower behind Piazza Roma. Search the corner plant at the top to trigger a “Search for Clues” prompt and pick up the Marano Market Business Card. That single item flips your next objective active. This is a classic item-trigger — no complex puzzle, just a small, specific interaction. If you’re using the official Arc Raiders Discord, someone will usually point this out in chat, which saves time.
Step 3 — Find Where the Thruster Valves Were Stashed
Observation: Ruined markets are natural caches for stolen goods.
Head to the Market Ruins next to the Hospital area — you only need to approach the collapsed building for the objective to register. There’s no container to open; proximity completes the step. If you’re using the Steam community guides, some players will mark exact spawn points that shave minutes off your search.
Step 4 — Search the Basement of the Merchant’s Nearby Apartment
Observation: Outskirts apartments keep their secrets below ground.
Go to the abandoned apartment on the outskirts and find the room with the zipline down to the basement. Ride it, move between the boxes, and use the “Take a Photo” prompt when it appears. That single action wraps the Line in the Sand quest. If you prefer visual pointers, community map pins on Steam and posts on Reddit mark the exact room.
Arc Raiders Line in the Sand Quest Rewards
Observation: Players check rewards first and strategy second.
Complete the quest to receive components that speed up Exodus builds. You get:
- 2x Exodus Modules
- 2x Magnetic Accelerator
- 2x Magnetron
What are the rewards for completing the Line in the Sand quest?
You receive two of each: Exodus Modules, Magnetic Accelerators, and Magnetrons. Those parts are handy for upgrading Exodus-class gear and will save you time grinding on the crafting loop.
If you want to shave minutes off runs, use pinned player-made maps on Steam and ask for route tips on the official game Discord. The clues in this quest thread through the map like a frayed wire to a power core.
Ready to test the route and post your fastest clear on Reddit — or do you think there’s a faster trick nobody’s talked about yet?