If you just picked up “What We Left Behind” from Tian Wen, this quest will send you exploring across three different maps:
- Dam Battlegrounds
- Buried City
- Spaceport
The objective is simple on paper: visit each marked location and “search” the highlighted object.
In practice? Some spots are hidden, some require a breach door, and a few are easy to miss if you’ve never been there.
Quest Overview

You must complete the following tasks:
- Search the South Swamp Outpost in Dam Battlegrounds
- Search the Raider Camp under the Parking Garage in Buried City
- Find Bilguun’s Hideout in Spaceport
There is no extraction requirement — once you trigger each objective, it stays completed even if you die afterward.
Dam Battlegrounds – South Swamp Outpost

📍 Location: South Swamp Outpost (southern Dam region)
Inside this outpost is a large ruined structure made from corrugated metal, almost like a tall busted tower.
How to Complete This Step

- Enter the South Swamp area.
- Look for the large, hollow metal structure.
- Inside, find a yellow glowing object you can interact with.
- Search it — objective done.
👉 This is one of the easier steps. However, this area sometimes has Patrol ARCs floating nearby, so keep your ears open.
Buried City – Parking Garage Raider Camp

📍 Location: Parking Garage — SE corner elevator shaft
You do not need to go to the top floor.
A much faster method is entering the garage through the elevator shaft on the ground floor.
How to Complete This Step

- Head to the Parking Garage POI in Buried City.
- Go to the southeast corner of the garage — you’ll find a breachable elevator shaft.
- Breach the elevator door on the ground floor.
- Inside you’ll find a zipline that drops directly into the Raider Camp below.
- Ride the zipline down.
- Search two containers inside the camp.
- Objective complete.
👉 This is the fastest and safest method compared to climbing the entire garage.
👉 Expect active ARC patrols (Hornets/Wasps) outside the structure — clear them first before breaching.
Spaceport – Bilguun’s Hideout

📍 Location: Container Storage → climb the outer wall → yellow hideout structure.
This is the most hidden location of the three.
How to Complete This Step


- Head to the Container Storage area in central Spaceport.
- Look for the massive wall structure behind the containers, facing east.
- On top of the wall is a large yellow metal hideout — this is Bilguun’s Hideout.
- Approach from the south side, climb the ruined section, and hop onto the platform.
- Enter the hideout and inspect the notes.
- Quest complete.
👉 Hornets sometimes patrol around the rooftops and wall edges here. If you hear that buzzing, don’t stand still.
Tips
★ You can do this with a free loadout
No special weapons or prison pocket needed. Even if you die, your progress stays.
★ Expect random ARC spawns
Across all three locations, I encountered:
- Hornets
- Wasps
- Fireballs
- Patrol drones
If one is floating nearby, handle it first — you don’t want to be interrupted inside a breach room.
Rewards for Completing “What We Left Behind”

Tian Wen gives you:
- Muzzle Brake II
- Vertical Grip II
- Stable Stock II
Solid early-game upgrades.





