How To Complete What We Left Behind in Arc Raiders: Step-by-Step Guide

The What We Left Behind quest in Arc Raiders is a scavenger mission from Tian Wen that sends you across multiple maps to recover lost Raider scrap. You’ll visit camps hidden in Buried City, Dam Battlegrounds, and Spaceport—each containing searchable containers or documents. Though there’s no heavy combat required, every area is populated by ARC patrols and rogue raiders, so stealth and quick looting help immensely. Completing all three objectives unlocks valuable rewards and pushes your reputation with Tian Wen forward.

What We Left Behind Step-by-Step Walkthrough

After accepting the quest from Tian Wen in Speranza, prepare for a multi-region search. Each objective involves locating Raider Camps and looting specific items marked with yellow icons. The mission can be completed across several raids, so there’s no rush—just extract safely after each run to keep your progress.

Head to Buried City and make your way to the Parking Garage near Marano Park at the center of the map.

Enter through the southwest breach door, use the zipline down, and search two containers—one Raider case in the center and one bag behind the corrugated metal.

Travel to Dam Battlegrounds and locate the South Swamp Outpost west of Water Treatment Control.

Inside the main cylindrical building, search the documents on a table marked with a yellow icon.

Move to Spaceport and locate Bilguun’s Hideout near Container Storage.

Climb onto the wall east of the area via the broken sections, then find the Raider habitation hanging from the side and collect the yellow-marked notes inside.

After looting all three camps, return to Speranza to report your findings to Tian Wen and complete the quest.

Completing What We Left Behind rewards you with high-grade scrap and potential crafting materials for advanced weapon builds. The mission encourages map familiarity and exploration of off-route areas that often contain additional loot. It’s a balanced objective combining scavenging and risk management without major combat.

Arc Raiders Beginner Tips

Choosing the right build determines how you survive in Arc Raiders. Focus on one combat path—rifle, stealth, or explosives—and pair it with perks and mods that support your strengths. Balanced setups help sustain longer raids and make extraction safer.

Keys are vital for opening locked rooms, secure chests, and hidden routes in zones like Dam Battlegrounds. Check Ruby Residence and Research & Administration Building for frequent drops, and always store rare keys in your Safe Pocket. Revisiting these locations often ensures a steady supply.

Weapon crafting defines long-term progress. Collect blueprints and salvage from missions, then craft and upgrade at Speranza’s stations. Combining rare materials like Processors and Electrical Components produces top-tier weapons suited for late-game raids.