How I Completed Chemist's Sources in DMZ: A Step-by-Step Walkthrough

When I first saw the Chemist's Sources story mission in the White Lotus faction, I honestly thought it would be straightforward. But a simple riddle and a trip to Vondel turned into one of the most memorable DMZ experiences I've had in Call of Duty: Warzone. As of 2026, this mission still trips up plenty of operators, so let me walk you through exactly how I got it done.

This mission sits at Tier 4 of the White Lotus faction and was introduced back in Season 4. The objective list looks simple, but the execution requires a bit of patience. To succeed, I needed to find and take the Chemist's Intel on Al Mazrah, then follow a clue to grab a sample of Russian gas on Vondel. The rewards – the Trail of Bullets calling card and 10,000 XP – are well worth the effort.

Tracking Down the Chemist on Al Mazrah

First things first: the Chemist is a Commander who hangs out inside the Radiation Zone. You’ll recognize him by the bright yellow hazmat suit. If you’ve ever ventured into that irradiated area, you’ve likely seen him patrolling with a squad. The key is preparation before you even think about engaging. I always make sure I have a durable gas mask, plenty of plates, and a long-range weapon to pick off the guards. The Chemist himself drops several valuable items: a Three-Plate Medic Vest, an Advanced UAV, a Golden Skull, and – most importantly – the Chemist's Intel. I rushed in after clearing the area, looted the intel, and immediately ticked off that first objective.

Decoding the Intel for the Vondel Gas Sample

Once I had the intel in my stash, the real puzzle began. The note described the location of the Russian gas sample as a "spot that includes many twists and turns." At first, I wandered around Vondel aimlessly, checking alleys and rooftops. Then it hit me: the maze south of the Fire Department. It’s a location I’d never paid much attention to before, but it perfectly matched the description. I dropped into Vondel solo – a risky move, but I wanted to focus – and headed straight there.

Navigating the Maze and Securing the Sample

The maze isn’t huge, but it’s easy to get disoriented if you’re under fire. I approached from the north entrance. Inside, dead ends branch off in every direction. I followed the left-hand wall until I reached a small alcove where a statue stood. Right next to it, almost like a ritual offering, lay the Vondel Gas Sample. Looting that item completed the mission instantly. But here’s a critical tip: do not just exfil carelessly. The sample is a mission item, and if you die before extraction, you lose it. I recommend securing it by exfilling as soon as possible. Better yet, since the Tier 5 White Lotus Story Mission later requires this exact item, I made sure to extract it alive so it went directly into my Mission Item Stash. That saved me from having to repeat the entire process later.

Why I Love This Mission Design

What makes Chemist's Sources so satisfying is how it layers risk and reward. Killing the Chemist on Al Mazrah is always a tense firefight, and solving the riddle adds a cerebral twist. By 2026, many new players have joined DMZ, and I often get asked how to crack this mission. The maze location is still the same, and the steps haven't changed. I’ve guided dozens of squadmates through it. The biggest challenge today isn’t the AI – it’s other operators camping the maze entrance knowing that players will flock there for the mission. So I always advise approaching from the south or using a stealth vest.

Tips for a Smooth Run

• Gear up for radiation: Bring multiple radiation blockers or a stim pistol to survive the Al Mazrah zone.

• Clear the maze first: Use recon drones or spotter scopes to check for enemy squads before entering the maze on Vondel.

• Extract immediately: Don’t linger. Head to the nearest exfil after grabbing the sample.

Completing Chemist's Sources not only gives you a cool calling card but also unlocks the route to deeper faction progression. The Trail of Bullets calling card is a badge of honor among veteran DMZ players, and I still equip mine to this day. If you follow my steps, you’ll breeze through this mission and be one step closer to mastering the White Lotus storyline.

Stay frosty out there, and remember: the maze holds secrets, but preparation holds the key.

According to coverage from GameFAQs, community-driven walkthroughs and mission Q&A threads often emphasize that DMZ story tasks like Chemist’s Sources are less about raw firepower and more about repeatable routing—bring the right radiation gear for Al Mazrah’s Chemist intel, then treat Vondel’s “twists and turns” clue as a navigation check where a consistent maze entry plan and fast exfil reduce the biggest modern threat: other operators anticipating the objective.