ARC Raiders What We Left Behind is a quest from Trader Tian Wen. It’s a confusing mission with vague objectives.
Let’s see what you must do to complete it!
How to Complete the ARC Raiders What We Left Behind Quest
The What We Left Behind mission has three objectives:
- Search the two containers in the Raider Camp beneath the Parking Garage on Buried City.
- Search for anything significant in the South Swamp Outpost on Dam Battlegrounds.
- Search for anything significant in Bilguun’s Hideout near the Container Storage on Spaceport.
Where to Find the What We Left Behind Quest Locations
The Two Containers in the Parking Garage on Buried City

The Parking Garage on Buried City is between the Hospital and Space Travel buildings. Make your way to the location and use the elevator.

Go down to reach the Raiders Camp, where you will find the two containers.
Anything Significant in the South Swamp Outpost on Dam Battlegrounds

Make your way to the South Swamp Outpost, south of Old Battleground and west of Water Treatment Control.

Enter the structure and look for the yellow-glowing item. Interact with the books to complete this objective.
Anything Significant in Bilguun’s Hideout on Spaceport

Make your way to the waypoint, near the eastern corner of the Container Storage area. Approach the location from the east and notice the wall. Go along the wall until you reach the broken section.

Climb up the broken wall and continue towards the metal container. Jump on the broken walkway to enter Bilguun’s Hideout. You will immediately see the notes you need to collect for this objective.

The reward for completing the ARC Raiders What We Left Behind quest includes Muzzle Brake II, Stable Stock II, and Vertical Grip II.
Check out more ARC Raiders guides!
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