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How to complete the Marathon Introducing Traxus contract

Guides
By Will Sawyer published 9 March 2026

For the Introducing Traxus contract in Marathon, you need to find a UESC terminal in Dire Marsh

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Marathon introducing Traxus contract player fighting UESC commander
(Image credit: Bungie)
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The Marathon Introducing Traxus contract from ONI is essential for unlocking the faction, but it's not the easiest for new players. Firstly, it takes place on Dire Marsh, a much larger and more dangerous map compared to Perimeter. It also requires you to fight a powerful UESC commander and you need to find and scan a container against the clock. It's worth doing this Marathon contract with a crew if possible, and I've laid out the steps and some tips for the Introducing Traxus Marathon contract below so you know what to expect before going in.

Marathon Introducing Traxus walkthrough

Marathon introducing Traxus contract dire marsh map showing where UESC terminals are

(Image credit: Bungie)

For the Introducing Traxus liaison contract in Marathon, you need to complete three objectives in a single run on the Dire Marsh map, which you have to be Season Level 3 to play on – of all the Marathon maps, it's easily the biggest and is quite a bit more dangerous than Perimeter, so expect ruthless enemy players and UESC. Additionally, one of the objectives involves taking down a robust UESC Commander, so make sure you're well-supplied with ammo and healing before attempting, especially if you're doing this solo.

Here's what you've got to do to complete this Marathon factions quest and get Traxus' attention:

  1. Load into a Dire Marsh run and head to either Intersection, Complex, or Bio-Research. I would go for whichever is closest from where you spawn but bear in mind that Intersection's central position means a lot of Runners will pass close by and may be attracted by any noise you make.
  2. Look for a dark blue UESC terminal in whichever location you choose to go to and interact with it – use the above map to help you find it. This will summon UESC reinforcements, so be ready for a fight.
    Intersection: Look around the second floor of the main building.
    Complex: Find the exterior catwalk on the southeastern side of the main area.
    Bio-Research: inside the western building on the ground floor.
  3. Defeat the UESC Commander that gets dropped off, then collect the Shipping Manifest item they drop. Be aware that picking up this manifest starts a three-minute timer for the next step.
  4. Find the nearby stacked shipping container within the time limit. A waypoint should guide you to the correct container, but you're looking for a large white container stacked on top of another one.
  5. Climb up to the top container's face with the QR-code-like pattern and "CRGO" tag on it, then follow the button prompt to scan it.

Marathon introducing Traxus contract stacked container in bio-research marked with waypoint

(Image credit: Bungie)

That's the end of the liaison contract for Traxus, and the container will get picked up by a UESC dropship. You can now exfil from your run to hand in the contract to ONI, bagging some Credits, several weapons attachments, and a Bully SMG, which is one of the best Marathon weapons in the game. You'll then be introduced to Traxus' enigmatic agent Vulcan and will have access to the Cutthroat Competition priority contract, as well as their upgrades, weapon-focused Armory offerings, and rank-up rewards if you do as they as request.

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Depending on how many other liaison contracts you've completed, you may also unlock another one, such as the Introducing Sekiguchi Genetics contract.

Best Marathon charactersMarathon DCONsMarathon Tox ClearMarathon Welcome to Tau CetiMarathon Introducing NuCaloric

Best Marathon characters: The best shells for your runs
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Will Sawyer
Will Sawyer
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Guides Editor, GamesRadar+

Will Sawyer is a Guides Editor at GamesRadar+ with over five years of experience in writing online guides, news, and features, and has a BA (Hons) in Journalism. Starting as a freelancer, Will contributed to startmenu and Game Rant before joining the GamesRadar+ team in August 2021. Since then, he has written hundreds of guides about a huge range of games, with shooters and action games being his areas of expertise. Outside of writing about games, Will hops between multiplayer shooters with friends, such as Darktide and Helldivers 2, and delves into whatever has been on his backlog for far too long. He also tries to get through his never-ending Warhammer pile of shame of grey Tyranids, Aeldari, and Chaos Space Marines.

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