What We Left Behind is one of the first multi-run missions players receive from Tian Wen in ARC Raiders, serving as an early introduction to quests that span multiple maps. While the combat is manageable for most early-game players, the quest emphasizes map navigation, environmental storytelling, and careful objective completion rather than raw firepower.

This comprehensive guide covers each objective in detail, including step-by-step instructions, extraction tips, and an in-depth look at the Tier II weapon attachment rewards. Understanding this quest not only accelerates early progression but also provides a solid foundation for farming ARC Raiders Items and experimenting with weapon attachments.

Quest Overview: What We Left Behind

The quest consists of three main objectives, each on a different map:

·Buried City

·Dam Battlegrounds

·Spaceport

No special equipment or consumables are required to complete the objectives, making it ideal for early-game players. Running free loadouts preserves high-value gear and allows you to focus on learning the maps and mission flow.

Upon completing all objectives, players return to Tian Wen to receive three Tier II weapon attachments, which remain effective well into mid-game combat scenarios.

Objective 1: Parking Garage - Buried City

The first task takes place in Buried City, near the Parking Garage landmark, which is located roughly in the center of the map near the Hospital.

Step-by-Step Instructions:

1. Enter the Parking Garage and locate the elevator.

2. Interact with the elevator to breach it.

While the breach works on all floors, the ground floor is recommended due to fewer environmental hazards, such as Pops or Fireballs.

·Take the zipline downward after breaching.

·Close doors behind you to slow down potential pursuers.

·At the bottom, locate a Raider Camp.

·Search two containers inside the camp to complete the objective.

Additional Tips:

·Weapon crates can spawn here, occasionally dropping Purple rarity weapons, making this area valuable for early loot farming.

Extraction Tip:

·After completing the objective, jump out of the window, turn right twice, and head into the metro station for a relatively safe extraction route.

Objective 2: South Swamp Outpost - Dam Battlegrounds

The second objective is at South Swamp Outpost in Dam Battlegrounds, a structure shaped like a silo.

Step-by-Step Instructions:

1. Enter the South Swamp Outpost.

2. Locate one of the open gaps around the building; multiple entry points exist.

3. Inside a corner of the structure, find an interactable item.

4. Interact with the item to complete the objective.

Tips:

·The silo-like structure can be confusing due to multiple entrances, but as long as it resembles a silo, you're in the correct building.

·Combat is minimal, so focus on navigation and looting efficiently.

Objective 3: Container Storage (Bilgunn's Hideout) - Spaceport

The final objective is located at Container Storage, also known as Bilgunn's Hideout, on the Spaceport map.

Step-by-Step Instructions:

1. Spawn into Spaceport and move to the right side of Container Storage.

2. Look for a broken section of the wall to cross over.

3. Optionally, climb over the wall, but be aware of sniper fire from enemy Raiders.

4. Locate the metal container mounted on the wall.

5. Use the ladder to reach the container and grab the notes.

6. Extract immediately to complete the objective.

Pro Tip:

·Prioritize safety during extraction to avoid PvP encounters and environmental hazards.

What We Left Behind Quest Rewards

Completing the quest grants three Tier II weapon attachments, which are versatile upgrades for multiple weapon types.

Muzzle Brake II

Best Weapons:

·Renegade

·Bettina

·Kettle

Effect: Reduces recoil and improves sustained fire accuracy, particularly effective on automatic or high-fire-rate weapons.

Vertical Grip II

Best Weapons:

·IL Toro

·Vulcano

·Arpeggio

·Hullcracker

Effect: Controls vertical recoil for harder-hitting rifles and heavy weapons, enhancing stability during prolonged engagements.

Stable Stock II

Best Weapons:

·Stitcher

·Osprey

·Rattler

·IL Toro

Effect: Improves overall weapon handling and steadiness, ideal for mid-range and hybrid weapons that rely on consistent tracking.

Final Tips and Takeaways

·Free Loadouts: Use free loadouts to minimize losses and risk.

·Map Awareness: Close doors and use terrain features to reduce PvP encounters during objectives.

·Long-Term Use: Tier II attachments remain relevant well beyondthe early game, especially for experimenting with various weapons.

·Avoid Early Purchases: Completing quests early reduces the need to buy ARC Raiders Blueprints or items later.

·Focus on Navigation: The quest emphasizes learning map layouts over combat skills.

Conclusion

What We Left Behind is an excellent early-game mission in ARC Raiders that teaches map navigation, objective prioritization, and reward optimization. By completing this multi-run quest, players gain practical experience with different maps, secure Tier II weapon attachments, and build a foundation for tackling more challenging missions.

These attachments-Muzzle Brake II, Vertical Grip II, and Stable Stock II-provide meaningful upgrades for early and mid-game builds, ensuring players are prepared for a wide variety of combat scenarios. Completing this quest efficiently not only accelerates progression but also reduces reliance on buying ARC Raiders Items, allowing you to enjoy the full tactical depth of the game.