You’re asking about the “What We Left Behind / Was wir zurückließen” quest in ARC Raiders and how to complete it. Here’s a concise guide based on recent guides and community walkthroughs. Direct answer
- The quest tasks you with locating leftover Raider items across three maps: the Buried City, Dam Battlegrounds, and Spaceport (Raider Camp beneath the Parking Garage in the Buried City area). Completing all targets yields rewards and increases reputation with Tian Wen.
Structured guide
- Buried City – Parkhaus area (Raider camp)
- Locate the buried parking structure near Marano Park.
- Inside, navigate to the western/southwestern corner to find an breakable door that leads through a zipline into an underground chamber.
- In the chamber, there are Raider containers (two containers: a large chest and a bag behind it). Open both to complete the first portion of Tian Wen’s mission. After looting, you may need to extract or proceed to the next location to continue.
- Dam Battlegrounds – South Swamp Outpost
- Travel to the southern swamp outpost and search for items of significance. Loot containers and notes as indicated by the quest markers. This step completes the second target region.
- Spaceport – Bilguun’s Hideout
- Find Bilguun’s Hideout near the Container Storage area.
- Collect the marked notes or loot items as directed by the quest objectives. This completes the final target region of the quest.
- Rewards and tips
- Completing all three regions yields weapon upgrade parts or similar boosts (exact items can vary by update). Expect items such as attachments and grips as described in multiple guide sources. Stay alert for ARC patrols and stray Hunters while you search.
Notes and verifications
- Several guides and videos published in late 2025 detail the exact paths and container locations, with minor map-specific differences. If a quest step doesn’t update after looting, many players resolve this by extracting via the Swamp Elevator and retrying the sequence.
If you’d like, I can synthesize a step-by-step checklist tailored to your current map progression or translate key tips into [translate:] markup for a learning-friendly format.
