Marathon Welcome to Tau Ceti Quest Guide (Complete Walkthrough)

So you’ve picked up the Welcome to Tau Ceti contract in Marathon and you’re already lost. Fantastic. Don’t worry – this Welcome to Tau Ceti quest guide will walk you through every single step of both parts like you’ve never touched a video game before. You’re welcome.

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Welcome to Tau Ceti – Part One: Proving You Can Shoot Things

The first part of the Welcome to Tau Ceti quest in Marathon has exactly two objectives. Two. You only need to do two things. Try not to overthink it.

Objective 1: Kill 3 UESC Enemies on Perimeter

Yes, three. Not thirty, not three hundred – three. These are standard AI enemies scattered all over Perimeter. Any type counts, so whether it’s a basic soldier or a commander, your kill log doesn’t care. When you spawn in, you’ll naturally land near one of these main areas:

• North Relay
• South Relay
• Hauler Station
• Overflow

Just walk toward whichever location is closest and enemies will practically line up for you. If you’re playing with a squad and your teammates are hoarding kills (rude), look for an Intercept Event or a High Value Target on the map. Those spawn extra UESC units so you can finally get your three. Oh, and a very important note: bugs do NOT count toward the UESC enemy kills. Marathon quest guide rule #1 – kill the right things.

Objective 2: Scan the FTL Array

Once you’ve impressed everyone with your three kills, it’s time to find the FTL array tower. You’re looking for a dark blue structure shaped like the letter T. Try to contain your excitement. You’ll find these on rooftops across Perimeter – the Overflow area is confirmed to have one on top of a building. Walk up to the terminal and interact with it to complete the scan. Pro tip from this Marathon quest guide: avoid Hauler Station because you literally cannot access the roof there. Check rooftops everywhere else first.

Progress Saves Between Runs: If you die after killing two UESC enemies, those two kills are saved. The game actually shows mercy. Once both objectives are complete, head to your faction screen, hit Complete Contract, grab Part Two, and load back in.

Welcome to Tau Ceti – Part Two: Light Sabotage

Part Two of the Welcome to Tau Ceti contract is even simpler, which is genuinely impressive. Load back into Perimeter and head to North Relay or South Relay. You’re looking for the comms antenna this time – different from the FTL array. The comms antenna has an aqua terminal with a big yellow antenna behind it. Hard to miss, unless you are somehow managing to miss it.

How to Sabotage the Comms Antenna

Walk up to the aqua terminal. Interact with it. That’s it. That’s the whole step. No extraction required. You don’t need to Xfil safely after completing this objective – just interact with the terminal, then head back to your faction screen and turn in the contract. The Welcome to Tau Ceti quest in Marathon is officially complete.

Welcome to Tau Ceti Quest Summary

• Part 1: Kill 3 UESC enemies on Perimeter (any type, no bugs).
• Part 1: Scan the FTL array tower (dark blue T-shape, check rooftops, skip Hauler Station).
• Complete contract at faction screen. Grab Part 2.
• Part 2: Load into Perimeter. Go to North or South Relay.
• Part 2: Interact with the comms antenna terminal (aqua terminal, yellow antenna).

Turn in at faction screen. Done. Go touch grass.