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Unidentified Contaminant Exploration Codex Guide for Throne & Liberty

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Time to identify the unidentified contaminant in the Windhill Shores… for science!

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“Unidentified Contaminant” is one of the Exploration Codex entries for the Windhill Shores region in Throne & Liberty.

It seems that the shore near the Spiral Cliff is home to a strange contaminant. Thankfully, there’s already a researcher working on identifying and clearing it from the environment. However, she needs your help to succeed!

In this guide, we’ll tell you how to help the Windhill Shores Researcher for the “Unidentified Contaminant” Exploration Codex quest.

Unidentified Contaminant Exploration Codex | Throne & Liberty Guide

Start | Unidentified Contaminant Exploration Codex Guide for Throne & Liberty

There are 4 different objectives for the “Unidentified Contaminant” Exploration Codex in Throne & Liberty, but all 4 of them must be done in order. So, to start, you must first talk to the Windhill Shores Researcher at Spiral Cliff. Her location is marked on the map above.

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Researcher

If you have trouble finding the researcher, look around the eastern side of the Spiral Cliff. The researcher will be near the cliff edge, overlooking the area below.

Reagent

After the conversation, your second objective is to acquire a Magical Reagent. Thankfully, the Magical Reagent is right next to the researcher! Just interact with the nearby shelf to pick it up.

Contaminant far view

As soon as you pick up the Magical Reagent, the next objective starts. You have to Glide Morph onto the shore below and spray the Magical Reagent on the Unidentified Contaminant. We’ve marked the location of the Unidentified Contaminant for you in the image above. It’s directly east of the Spiral Cliff.

Contaminant close view

Any Glide Morph works for this, thankfully, including the basic Eagle Morph you start the game with. However, you do have to reach the Unidentified Contaminant within 1 minute of picking up the Magical Reagent. You also have to avoid touching seawater. Don’t dilly-dally!

Contaminant interact

Interact with the Unidentified Contaminant upon landing to complete the objective. It seems the contaminant was a Large Stone Crab all along!

Deal With The Large Enemy Crab

Large Stone Crab

Last but not least, your final objective is to defeat a Large Stone Crab while it’s wet from either rain or seawater. Large Stone Crabs spawn on the shore by the Spiral Cliff, so you can do it right after spraying the Unidentified Contaminant.

Large Stone Crab kiting

The fastest way to complete the objective is to attack a Large Stone Crab to aggro it, then rush into the seawater yourself. The Large Stone Crab will follow you automatically and get wet. Get out of the water and kill it to complete the objective. Just keep in mind that the objective won’t count as completed if the Large Stone Crab isn’t wet.

Large Stone Crab defeated

With that final objective, you’re all done with the “Unidentified Contaminant” Exploration Codex task for the Windhill Shores region in Throne & Liberty. Did you know, though, that this region is also one of the best spots to farm one of the many cooking materials in the game? Check out our guide on how to get Salt to learn more!

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Andrés
Written by

Andrés

Senior Game Guide Writer

Andrés is a veteran gaming writer with over twenty years of hands-on experience across a wide range of genres, including Action-RPGs, high-difficulty games, and narrative-driven titles. His work is based on direct gameplay, testing mechanics, progression systems, and strategies firsthand rather than relying on secondary sources. At GamesFuze, Andrés focuses on producing accurate, practical guides and walkthroughs that help players understand complex systems, avoid common mistakes, and make informed decisions throughout their playthroughs.

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