The “What We Left Behind” quest in ARC Raiders takes you on a hunt across three different maps to find important leftover items. You will need to explore dangerous areas like the South Swamp Outpost, Bilguun’s Hideout, and the Raider Camp in the Buried City. Each place is filled with enemies, so stay alert while you search for valuable loot. Once you complete all the tasks, you will earn weapon upgrade parts to make your gear stronger for future missions.
What We Left Behind Quest
For this quest, your goal is to find something important in the South Swamp Outpost. You will need to loot items across three different maps. First, you need to search for anything significant in the South Swamp Outpost. Then you need to search for anything significant in Bilguun’s Hideout, next to the Container Storage. After that, search 2 containers in the Raider Camp beneath the Parking Garage. Once you finish the mission, you will be rewarded with Muzzle Brake II, Vertical Grip II, and Angled Grip II.
The South Swamp Outpost


Head over to the South Swamp Outpost area. Go inside and search through the containers for anything valuable. This area is filled with enemies, so stay alert. If the quest doesn’t update after looting. Just extract using the Swamp Elevator, restart, and come back to the same spot to try again.
Bilguun’s Hideout Area


Head over to the Spaceport map region and make your way to Bilguun’s Hideout, which you will find next to the Container Storage area. Climb up the ladder to reach the spot and look around for any valuable loot. If the quest doesn’t register your find, just extract and try again in another raid until it counts.
The Raider Camp



For the final objective, head to the Buried City map and make your way to the Parking Garage, which is north of the Space Travel building. Break through the garage door and take the zipline down to the Raider Camp below. Once you’re there, search and loot any two containers in the area. If the quest doesn’t update, explore deeper into the camp and check more containers. Be careful, as this place is filled with enemies.
