Call of Duty: Modern Warfare III (2023)

Modern Warfare III (2023) Caustic River Camo

Zombies · Holger 556Zombies camoOriginal challenge route
Zombies · Holger 556Caustic River camo — Call of Duty: Modern Warfare III (2023)

How do you unlock Caustic River in Modern Warfare III (2023) Zombies?

Caustic River is a Zombies base camo in Modern Warfare III (2023), earned with the MWIII Holger 556. Reach weapon level 24 on the Holger 556; then in Zombies, get 200 Critical Kills. Once earned, this base camo can be equipped on eligible MWII and MWIII weapons in MWIII.

RequirementReach weapon level 24 on the Holger 556; then in Zombies, get 200 Critical Kills.
ChallengeIn Zombies, get 200 Critical Kills
AvailabilityOriginal challenge route. Public sources were reviewed; no live in-game completion test was performed.

Reviewed September 18, 2026. Compiled from official Call of Duty progression and season announcements and the dated public wiki camo and weapon tables. No live in-game verification or current event availability is claimed.

Sources: Call of Duty — MWIII weapon and camo progression · Call of Duty — launch weapon roster and carry forward · Call of Duty — Season 6 final progression and Ranked rewards · Call of Duty Wiki — camo challenge catalog · Call of Duty — Warzone Season 4 Ranked rewards · Call of Duty — Warzone Season 6 Ranked rewards

Event sources: Call of Duty Wiki reference

How do you make progress toward Caustic River?

Open the Holger 556 camo panel and confirm the required level before tracking this zombies objective.

Once earned, this base camo can be equipped on eligible MWII and MWIII weapons in MWIII.

Every camo, exact unlocks — see the full Modern Warfare III (2023) camo directory.

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Caustic River — common questions

Which weapon and mode unlock Caustic River?

Caustic River is a Zombies base camo in Modern Warfare III (2023), earned with the MWIII Holger 556. Reach weapon level 24 on the Holger 556; then in Zombies, get 200 Critical Kills. Once earned, this base camo can be equipped on eligible MWII and MWIII weapons in MWIII.

Does Caustic River count toward weapon mastery?

Once earned, this base camo can be equipped on eligible MWII and MWIII weapons in MWIII.

Is Caustic River still obtainable?

Original challenge route. Public sources were reviewed; no live in-game completion test was performed.

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