Call of Duty: Modern Warfare II (2022)

Modern Warfare II (2022) Chemical Reaction Camo

Kastov-74U · Level 20Multiplayer camoWeapon challenge
Kastov-74U · Level 20Chemical Reaction camo — Call of Duty: Modern Warfare II (2022)

How do you unlock Chemical Reaction in MWII Multiplayer?

Chemical Reaction is a Cliffside base camo in Modern Warfare II (2022). Reach weapon level 20 on the Kastov-74U, then complete 30 kills while crouched with it. Once earned, you can apply this base pattern to other compatible weapons; its challenge is completed with the Kastov-74U, not repeated separately on every gun.

RequirementReach weapon level 20 on the Kastov-74U, then complete 30 kills while crouched with it.
ChallengeKastov-74U: 30 kills while crouched.
AvailabilityDocumented MWII weapon challenge. Current online progression was not tested in-game.

Reviewed September 18, 2026. Compiled from official progression/reward announcements and public weapon/camo references on September 18, 2026. Reference tables were cross-checked where available. Not verified in a live game; expired events and Battle Pass routes are identified as historical.

Sources: Call of Duty — MWII launch progression and mastery · Emil Carlsson — Orion challenge reference (MIT) · Call of Duty Wiki — MWII camo catalogue · GamesAtlas — MWII weapon access catalogue · Activision Support — Season 06 rewards · WZHUB — independent MWII challenge comparison

Event sources: Emil Carlsson — Orion challenge reference (MIT) · WZHUB — MWII Orion challenge reference — event scope checked 2026-09-18.

How do you make progress toward Chemical Reaction?

Stay crouched for the elimination rather than standing before the finishing shot.

Chemical Reaction contributes to the Kastov-74U’s base-camo completion. Finishing that weapon’s full base set opens its Gold challenge; earning this single pattern does not award Gold.

Every camo, exact unlocks — see the full Modern Warfare II (2022) camo directory.

Browse camosBrowse weapons

Chemical Reaction — common questions

Which weapon unlocks Chemical Reaction in Modern Warfare II (2022)?

Chemical Reaction is a Cliffside base camo in Modern Warfare II (2022). Reach weapon level 20 on the Kastov-74U, then complete 30 kills while crouched with it. Once earned, you can apply this base pattern to other compatible weapons; its challenge is completed with the Kastov-74U, not repeated separately on every gun.

How is Chemical Reaction progress tracked?

Chemical Reaction contributes to the Kastov-74U’s base-camo completion. Finishing that weapon’s full base set opens its Gold challenge; earning this single pattern does not award Gold.

Is Chemical Reaction still obtainable?

Documented MWII weapon challenge. Current online progression was not tested in-game.

More Modern Warfare II (2022) camos

Camo directory →
Desert Rain camo — Call of Duty: Modern Warfare II (2022)Base camoDesert RainLockwood MK2 · Level 11Earthbound camo — Call of Duty: Modern Warfare II (2022)Base camoEarthboundSignal 50 · Level 16Forest Rain camo — Call of Duty: Modern Warfare II (2022)Base camoForest RainVaznev-9K · Level 9Fractal Mud camo — Call of Duty: Modern Warfare II (2022)Base camoFractal MudSakin MG38 · Level 13Night Quarry camo — Call of Duty: Modern Warfare II (2022)Base camoNight Quarry556 Icarus · Level 11Quarry camo — Call of Duty: Modern Warfare II (2022)Base camoQuarryRapp H · Level 13Rupture camo — Call of Duty: Modern Warfare II (2022)Base camoRuptureRPK · Level 18Violent Orchid camo — Call of Duty: Modern Warfare II (2022)Base camoViolent OrchidExpedite 12 · Level 298-Bit Static camo — Call of Duty: Modern Warfare II (2022)Base camo8-Bit Static.50 GS · Level 2680s Fever camo — Call of Duty: Modern Warfare II (2022)Base camo80s FeverFennec 45 · Level 26Abominable camo — Call of Duty: Modern Warfare II (2022)Base camoAbominableLM-S · Level 5Acrid Drift camo — Call of Duty: Modern Warfare II (2022)Base camoAcrid DriftLachmann Shroud · Level 8