How to complete the Marathon Introducing NuCaloric contract

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How to complete the Marathon Introducing NuCaloric contract Guides By Will Sawyer published 9 March 2026

Here's how you retrieve the NuCal employee ID for this Marathon liaison contract

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(Image credit: Bungie)

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Completing the Marathon Introducing NuCaloric contract from ONI grants you access to all sorts of NuCal goodies, and it’s also quite a simple quest. However, it's never safe on Tau Ceti, and this set of objectives sends you to a tick-infested building in a bit of a high-traffic area for other Marathon players, so it can be a bit tricky to pull off safely. If you're completely stumped as to how to complete Introducing NuCaloric in Marathon, I've explained the whole contract below.

Marathon Introducing NuCaloric walkthrough

(Image credit: Bungie)

The Introducing NuCaloric quest tasks you with grabbing an employee ID from a building in the Columns region of the Perimeter map, then downloading the data onto a terminal – two easy steps that you must complete in a single run, but you don't have to successfully exfil afterwards.Before starting, I strongly advise making sure you've got several healing items (Patch Kits and Shield Charges) on you as you might get attacked by quite a lot of ticks. These exploding red bugs aren't especially dangerous but it's not ideal if they keep chipping away at your health. Furthermore, approach this tick-infested building with caution as other runners may camp here looking for easy kills. With all that in mind, here's what you need to do:

1. Head to Columns, which is between South Relay and Overflow, and look for the small building covered in red tick nests and organic goop – see the above map for the building's exact location.
2. Destroy the three tick nests on the outside of the building. This isn't necessary to complete the contract but will make the area safer. It's also a good idea to use your knife to make less noise, as our Marathon tips mention.
3. Use the ladder to the right of the building's front door to get onto the roof, then look for and smash open the roof hatch.
4. Drop into the building's storeroom and use the control panel next to the door to get out. Be ready to destroy two tick nests in the back-left corner of the building.
5. Open the door into the adjoining room and destroy the final tick nest on the ceiling.
6. In the same room, grab the NuCal Employee ID card from the shelf on the left. It's almost directly underneath the tick nest you just destroyed.
7. Interact with the orange computer across the room to download the data.

(Image credit: Bungie)

And that's it! End your run, preferably by exfiltrating safely, and you can hand in the contract to ONI, getting you some Enhanced Shields, Credits, Enhanced healing items, and more. Of course, you'll also get an introduction with NuCaloric's AI agent Gaius, unlocking the first of many Marathon Factions for you. You'll be able to earn reputation and complete contracts, including the Survival Direction priority contract. You'll also unlock the introducing MIDA liaison contract from ONI too, though you should already have the Marathon Introducing Traxus contract as well.

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• Marathon Introducing Traxus contract guide and UESC terminal locations for Intersection, Complex, and Bio-Research
• How to scan the FTL array and sabotage a comms antenna for the Marathon Welcome to Tau Ceti mission
• Marathon DCON locations and how to use them to complete your contracts

Best Marathon classes: Top-tier Runner ShellsMarathon weapons: Tools of destructionMarathon DCONs: Deconstruction locationsMarathon Tox Clear: Vent the toxic gasMarathon Silk: Unlock Reward Pass items

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Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsorsBy submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over. CATEGORIES Xbox Series X PS5 PC Gaming Platforms Xbox PlayStation Will SawyerSocial Links NavigationGuides 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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