ARC Raiders “What We Left Behind” Quest Walkthrough: All Locations & Rewards

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Valencia

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In ARC Raiders, quests from vendors not only progress the story but also encourage exploration across the game’s massive, hostile landscapes. “What We Left Behind” is one such quest, offered by Tian Wen, and it tasks you with uncovering remnants of the past scattered across three separate maps: Buried City, Dam Battlegrounds, and Spaceport.

While none of the objectives are particularly combat-heavy, each requires careful navigation and an eye for detail — especially since the quest doesn’t explicitly mark your destinations. This guide provides a full walkthrough of each location, tips to complete the objectives safely, and a look at the rewards you’ll earn from Tian Wen upon completion.

Quest Overview

Quest Giver: Tian Wen
Quest Name: What We Left Behind
Objectives:

1. Search the Parking Garage in Buried City

2. Investigate the South Swamp Outpost in Dam Battlegrounds

3. Recover the notes near Container Storage in Spaceport

Recommended Loadout: Free or lightweight setup (no items needed)
Difficulty: Moderate (exploration-focused, minor combat potential)

You’ll complete this quest across three separate expeditions, one per map. Since there’s no need to bring materials or tools, you can run a free loadout to minimize the risk of losing gear.

1. Buried City – Parking Garage Objective

The first stop in your quest is the Parking Garage in Buried City, located roughly in the center of the map, not far from the Hospital.

Step-by-Step Guide:

1. Locate the Garage:
   After spawning into Buried City, make your way toward the Hospital area — the Parking Garage is adjacent to it. Look for a large, multi-level structure with open ramps and a visible elevator section.

2. Access the Elevator:
   Once inside the garage, locate the elevator (you can find one on each level). Interact with it to breach the elevator shaft and descend using the zipline.

3. Secure the Raider Camp:
   At the bottom of the shaft, you’ll arrive at a hidden Raider Camp. This area often contains valuable loot — check the containers and crates around you.

   • Search two containers to complete this objective.

   • There’s a small chance a weapon crate will spawn here, potentially dropping Purple-tier weapons, so it’s worth checking thoroughly.

4. Extraction Tip:
   Once the objective is complete, exit through the nearby window, then turn right twice to find the metro station. This is a quick and relatively safe extraction route.

Hazards:

While the Parking Garage isn’t always crowded, expect the occasional ARC patrol or enemy Raider. Close the elevator doors behind you after breaching to delay any pursuers.

2. Dam Battlegrounds – South Swamp Outpost Objective

Next, travel to Dam Battlegrounds for your second objective, located in the South Swamp Outpost area.

Step-by-Step Guide:

1. Find the Outpost:
   The South Swamp Outpost lies toward the southern portion of the map. Look for a silo-shaped structure surrounded by wetlands and smaller storage buildings.

2. Enter the Building:
   The structure has several open gaps in its outer shell — use any of these to enter. Once inside, explore the interior until you locate a glowing item prompt in one of the corners.

3. Interact with the Object:
   Interact with the marked item to trigger the objective completion. This will automatically update your quest log for the next mission step.

Tips for Success:

• The swampy terrain can be difficult to navigate. Stick to elevated walkways where possible to avoid getting bogged down.

• ARC units sometimes patrol this zone, but their density is lower compared to other Dam Battlegrounds locations like the Control Tower.

• Bring a mid-range weapon to deal with any stray enemies while maintaining mobility.

Once you’ve interacted with the quest item, extract using the nearby South Ridge exit or Dam Edge route.

3. Spaceport – Container Storage (Bilgunn’s Hideout) Objective

Your final mission takes place in the Spaceport, a sprawling industrial zone filled with cargo containers and elevated walkways. The goal is to investigate Container Storage, specifically an area associated with Bilgunn’s Hideout.

Step-by-Step Guide:

1. Locate Container Storage:
   Spawn into the Spaceport and move toward the eastern side of the map where Container Storage is located.

2. Find the Access Point:
   You’ll notice a broken section of the outer wall that allows you to move between the container zones. You can either:

   • Climb the broken wall for a direct route (risky, due to exposure), or

   • Use the lower passageway for safer movement and cover.

3. Reach the Ladder:
   Look for a metal container set against the wall — this is the one you need. A ladder leads to the top, where an interactable note can be found.

4. Collect the Notes:
   Interact with the object to retrieve Tian Wen’s lost notes. Once done, your final objective is complete, and you can extract to return to base.

Safety Tip:

The Spaceport is a PvP hotspot with numerous open lines of sight. If you climb the wall or ladder, keep moving — standing still for too long can make you an easy target for snipers.

Quest Rewards

After completing all three objectives, return to Tian Wen in Speranza to turn in the quest. You’ll be rewarded with several valuable weapon attachments to help improve your loadouts:

• Muzzle Brake II – Reduces weapon recoil for better shot stability.

• Vertical Grip II – Increases control and precision during sustained fire.

• Stable Stock II – Enhances handling and reduces sway when aiming down sights.

These attachments make a significant difference in mid-to-late-game combat, especially when facing tougher ARC units or rival Raiders.

Bonus Tip: Save Time with GladiatorBoost’s ARC Raiders Services

If you find yourself struggling with missions like What We Left Behind or simply want to skip the repetition of long scavenging runs, ARC Raiders Boosting at GladiatorBoost is an excellent option.

GladiatorBoost’s professional boosting services help players complete difficult quests, farm rare resources, and acquire high-quality gear without the frustration of repeated failures or long farming sessions. Their expert boosters play efficiently and securely, ensuring your account and progress remain safe.

Whether you’re looking to complete vendor missions, upgrade your base, or unlock powerful attachments faster, GladiatorBoost offers a reliable way to maximize your ARC Raiders experience without the grind.

Final Thoughts

The “What We Left Behind” quest may not be the most combat-intensive mission in ARC Raiders, but it perfectly captures the spirit of scavenging and survival that defines the game. Each location — from the eerie Parking Garage in Buried City to the industrial chaos of the Spaceport — tells its own story of humanity’s remnants.

By following this guide, you can complete all objectives efficiently, avoid unnecessary danger, and secure Tian Wen’s valuable attachment rewards. Just remember to travel light, move cautiously, and extract as soon as your goals are complete — because in ARC Raiders, survival always comes first.