After photographing the truck, your objective updates again, instructing you to ARC Raiders Coins search it for more information about who sabotaged the water supply. Interact with the truck's door to investigate further.

Inside, you'll discover a Spaceport Warehouse Key. ARCR Items provides confirmation that the contamination originated from Spaceport operations and ties the sabotage to a larger network rather than a random incident.

Once you pick up the key, make sure to place it in your safe pocket if you have one available. While the key is not required for future quests, it can unlock valuable loot during later Spaceport runs, making it a worthwhile item to keep.

Extracting Safely from the Swamp

With the Spaceport Warehouse Key secured, A Toxic Trail is effectively complete. At this point, your best option is to extract via the Central Swamp Lift, which is conveniently located nearby.

That said, be cautious. Extraction points in swamp areas are often prime ambush locations, and the Central Swamp Lift is no exception. Before initiating extraction, take a moment to scan your surroundings, check sightlines, and listen for enemy movement. Keeping your weapon ready could mean the difference between a successful extraction and losing your newly acquired key.

If everything goes smoothly, extract and return to Speranza to turn in the quest.

Quest Rewards and What Comes Next

Upon completing A Toxic Trail and reporting back, you'll unlock the next quest in the storyline: The Stench of Corruption. This follow-up continues the investigation into the poisoned water supply and is required if you want to earn the Warden outfit, one of the standout cosmetic rewards tied to this questline.

While A Toxic Trail is relatively short, it plays an important role in advancing the narrative and setting up future objectives. It also rewards attentive exploration, encouraging players to buy ARC Raiders Coins revisit earlier locations and re-examine clues with fresh context.