Marathon Parasitism 1 Guide

Marathon‘s first Priority Contract for SekGen, Parasitism [1/5], requires players to head to the Outpost map and acquire combat data from UESC Ghosts, the invisible enemies from the Processing area, and then to retrieve and deposit the UESC Data Bank from Pinwheel Base.

If you’re searching for UESC Ghosts or need help accessing Pinwheel Base in Marathon, then we’ve got you covered. Below, you’ll find all three steps to Parasitism [1/5] so you can complete this contract in a single run against all other Runners who dare to compete.

How to Get Combat Data from UESC Ghosts in Marathon

Step 1: Acquire Combat Data from UESC Ghosts on Processing Rooftop

1. Head to the Outpost map.
2. Venture to the southwest POI, Processing, and access the rooftop.
3. Across the rooftops, you will find UESC Ghosts, which are AI-controlled enemies that are often invisible.
4. These enemies aren’t too tough, but when they’re eliminated, they will drop UESC Combat Data.
5. After picking up x2 UESC Combat Data, you will complete this step, but the other steps must be completed in the same run.

How to Get the UESC Data Bank in Marathon

Step 2: Acquire UESC Data Bank from Pinwheel Base Center

1. Pinwheel can be accessed through multiple ways, but we’ll showcase the way through Flight Control.
2. You’ll need to grab Clearance Codes, and in the Flight Control area, you’ll find a locked gate with a terminal showcasing different colors.
3. There can be Yellow Clearance Codes (acquired from terminals in POIs), or Green Clearance Codes (random loot on tables), or Red Clearance Codes (rooftops of POIs).
4. Insert the keycards into the terminal at Flight Control to open a nearby hacking station.
5. This begins a lockdown where you need to kill enemies until the elevator arrives.
6. Take the elevator up in the Pinwheel Base, and head into the center through the main doors.
7. You’ll find a central terminal with an objective marker where you can “Eject Data Bank”.

How to Deliver UESC Data Bank to DCON in Marathon

Step 3: Deliver UESC Data Bank to DCON

1. With the UESC Data Bank acquired from Pinwheel Base, exit via the same way you came in.
2. Look at the map to find DCON icons, with one of the closest being in the northern area by Orientation.
3. At the DCON chest, open it with the interact button and drag the item into the DCON inventory.

Released

March 5, 2026

ESRB

Teen / Animated Blood, Language, Violence, In-Game Purchases, Users Interact

Multiplayer

Online Multiplayer, Online Co-Op