Home » How-To » Gaming » How to Investigate the Chemical Treatment Plant in DMZ

How to Investigate the Chemical Treatment Plant in DMZ

Season 3 of DMZ contains a new DMZ playspace—The Koschei Complex Exclusion Zone.

Access one of four entrances to explore the secrets of the facility.

Watch out for an incoming Intel Drop with a peek at DMZ’s latest playspace.

There is a new item called NVGs where you can see in the dark with night vision goggles.

A new UI representation of your dog tag level is implemented along with new Buy Station and Workbench locations.

Enemy combatant spawns are adjusted and the Armored Commander has a chance to carry a Weapon Case.

Other updates include an Overlord voice callout and an improved out-of-game user interface for the Secure Backpack.

In this guide, you’ll learn how to investigate the chemical treatment plant in Call of Duty: Warzone 2 DMZ.

How to Investigate the Chemical Treatment Plant in DMZ

Screenshots: GuidingLight

To investigate the Chemical Treatment Plant in DMZ, you need to cut off the gas to head into each section.

To cut off the gas, you need to select “Close Bunker Door” on all buttons and manually crank the wheel on the door if the button for it is broken.

Here’s how to do this (expand the screenshots above):

  1. Enter the Koschei Complex.
  2. Explore the rooms until you reach one with multiple buttons—select “Close Bunker Door” on all buttons.
  3. Continue deeper until you reach a room with AI and buttons—defeat them and select “Close Bunker Door” on all buttons.
  4. If a button is broken, you need to manually crank the wheel on the door to close it.
  5. Continue deeper, select “Close Bunker Door” on all buttons again, and manually crank the wheel on one of the doors to close it.
  6. Once you’re at the Chemical Plant, open the bunker door, make your way to an extraction icon, and extract.

Closing the bunker doors will close the hatches in the chemical treatment plant.

This will prevent the gas from getting to you.

Further reading

How to Discover What the AQ is Looking for in the Oasis in DMZ

How to Enter the Koschei Complex in DMZ

How to Find a Rebreather in Warzone 2 DMZ


About the author

Lim How Wei

Lim How Wei is the founder of followchain.org, with 8+ years of experience in Social Media Marketing and 4+ years of experience as an active investor in stocks and cryptocurrencies. He has researched, tested, and written thousands of articles ranging from social media platforms to messaging apps.

Lim has been quoted and referenced by major publications and media companies like WikiHow, Fast Company, HuffPost, Vice, New York Post, The Conversation, and many others. One of his articles about the gig economy was quoted by Joe Rogan who hosts The Joe Rogan Experience (arguably the most popular podcast in the world), in the This Past Weekend podcast by Theo Von.

In his free time, Lim plays multiple games like Genshin Impact, League of Legends, Counter-Strike, Hearthstone, RuneScape, and many others. He creates guides, walkthroughs, solutions, and more on games that he plays to help other players with their progression.