The Chemist is one of DMZ's most distinctive and rewarding bosses. Unlike the Juggernaut's brute force approach, the Chemist fights on his own terms inside a deadly radiation zone, surrounded by elite guards, and armed with a unique M13B blueprint that players covet . Defeating him is the only way to unlock this powerful assault rifle for use across all Modern Warfare II and Warzone 2.0 modes .
This guide covers everything you need to know: how to find the radiation zone, how to prepare for the toxic environment, the most effective strategies to eliminate him, and how to secure the M13B for permanent unlock.
Who Is the Chemist?
The Chemist is a boss-tier AI enemy in DMZ, easily identified by his bright yellow hazmat suit . He serves as the primary guardian of the radiation zone and the exclusive source of the M13B assault rifle .
Key Characteristics:
Location: Always inside the active radiation zone on the Al Mazrah map
Health: More than standard enemies but less than a Juggernaut
Behavior: When first shot, he drops to the ground and deploys smoke to obscure vision
Critical Note: There is only one Chemist per radiation zone, and he does not respawn once killed . If another squad beats you to him, you must exfil and try again in a new match.
Finding the Radiation Zone
The Chemist only spawns within the active radiation zone on Al Mazrah. This zone appears randomly during the match and is clearly marked on your TacMap.
How to Identify the Radiation Zone
Visual Cue: A large yellow circle with a purple (or pink/magenta) radiation symbol in the center
Location: Can appear anywhere on Al Mazrah no fixed spawn points
Timing: Appears randomly within the approximately 25-minute match duration
What to Look For
Important: The radiation zone is a PvP hotspot. Other players know exactly where it is and will be watching for anyone attempting to claim the M13B .
Essential Preparation
You cannot survive the radiation zone without proper preparation. Here is what you need before entering:
Required Items
Recommended Loadout
Tactical: Snapshot Grenades to locate the Chemist through smoke
Lethal: Thermite or Semtex for consistent damage
Field Upgrade: Munitions Box for ammo resupply
Pro Tip: Consider gearing up elsewhere on the map first. One strategy suggests loading into Ashika Island to secure a 3-plate vest before heading to Al Mazrah for the Chemist fight .
Combat Strategies
You have two primary approaches to eliminating the Chemist. Choose based on your playstyle and available equipment.
Strategy #1: The Vehicle Method (Fastest and Safest)
This is the same high-speed strategy that works on the Juggernaut and is widely considered the most efficient way to deal with the Chemist .
How to Execute:
Find an armored vehicle (armored truck, cargo truck, or LTV work best)
Drive directly into the radiation zone your vehicle protects you from radiation temporarily
Locate the Chemist (look for the yellow hazmat suit)
Run him over repeatedly back up and run him over again
Jump out to loot once he is eliminated
Why This Works: The Chemist, like the Juggernaut, has limited ability to track a fast-moving vehicle. His guards may shoot at you, but an armored vehicle can absorb significant damage .
Warning: If your vehicle catches fire, retreat outside the radiation zone to repair before re-entering.
Strategy #2: The Distance Engagement Method (Solo-Friendly)
If you prefer to engage on foot or are playing solo, this method minimizes risk .
How to Execute:
Position yourself at the edge of the radiation zone with a clear line of sight
Use a sniper rifle or accurate assault rifle to engage from distance
Track his position through the smoke using snapshot grenades or thermal optics
Continue firing until he is eliminated
Move in quickly to grab the M13B and any valuable loot
Important: The guards will return fire and may push toward your position. Stay mobile and use cover .
Additional Combat Tips
Mortar Strikes and Air Strikes: These can thin out the Chemist's guards before you engage
Aim for Headshots: This speeds up the elimination significantly
Watch for the Smoke Screen: When the Chemist drops smoke, he becomes harder to hit be prepared to adjust your aim or use equipment to counter it
The Reward: M13B Assault Rifle
The Chemist's primary reward is a unique, modded version of the M13B assault rifle . This is not just another contraband weapon extracting with it permanently unlocks the M13B for use across all game modes .
About the M13B
Weapon Type: Assault Rifle
Appearance: Signature yellow and black color scheme inspired by the Chemist
Performance: Excellent long-range weapon with manageable recoil; lower damage output than some rifles but highly accurate
Unlock Method: Only available by defeating the Chemist and extracting with his weapon
What You Must Do
Pick up the M13B immediately after defeating the Chemist
Exfil successfully while carrying the weapon
Permanent unlock achieved the M13B is now available in your arsenal
Critical Note: Only the player physically holding the M13B at extraction will unlock it permanently .
Alternative Unlock Methods
If you cannot defeat the Chemist yourself, there are two other ways to get the M13B:
Have a friend drop it: If a teammate already has the M13B unlocked, they can bring it into DMZ as an insured weapon and drop it for you to extract with
Purchase a bundle: A store bundle containing the M13B may become available for CoD points
The Extraction Phase
Once you have the M13B in your inventory, your primary objective shifts to survival and extraction.
Extraction Challenges
You are now a target: Unlike the Juggernaut Weapon Case, the M13B does not mark you on the map, but the radiation zone itself is a known PvP hotspot
Other squads may be waiting: Players who saw you enter the radiation zone may be camping exfil points
AI guards remain: The radiation zone still contains hostile AI
Safe Extraction Tips
Move away from the radiation zone immediately do not linger
Check the nearest exfil point for activity before approaching
Consider a hostage rescue exfil for a private, unmarked helicopter
Use a vehicle to reach exfil quickly
Stay alert until the extraction helicopter departs
Bonus Reward: Faction Mission Unlock
Beyond the M13B, defeating the Chemist also progresses your faction missions. According to the White Lotus Bounty Board at Faction Level 3, killing the Chemist unlocks the barter recipe for the Revive Pistol .
This allows you to craft Revive Pistols at buy stations, giving you and your squad a powerful tool for reviving downed teammates from a distance.
Summary Checklist
| Phase | Key Action |
|---|---|
| Prep | Secure Gas Mask or Radiation Blocker, 3-Plate Vest, and armored vehicle |
| Locate | Find yellow circle with purple radiation symbol on TacMap |
| Engage | Run over OR engage from distance with sniper fire |
| Loot | Grab the unique yellow/black M13B immediately |
| Extract | Reach exfil safely watch for other players |
| Unlock | M13B permanently added to your arsenal |
The Chemist is your gateway to one of Modern Warfare II's most versatile assault rifles. Master this fight, and you will never have to worry about M13B unlocks again.
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