Modern Warfare 4 Beta Litmus Camo
Beta · Limited Beta challenge
How do you unlock Litmus in Modern Warfare 4 Beta?
Litmus was a hidden camo challenge in the Modern Warfare 4 Beta. Players report it unlocked at 1,500 Operator kills, counting true kills rather than eliminations. The Beta ended September 1, 2026 at 10 AM PT, so Litmus can no longer be earned.
Was Litmus the MW4 Level 30 Beta reward?
No. The Level 30 Beta reward was the Beta Forged Han 86 Weapon Blueprint. Litmus was a separate hidden challenge camo.
Does MW4 Beta progress carry over to launch?
Eligible earned Beta cosmetics carry over to launch. Beta player levels and weapon unlocks do not.
Litmus — common questions
Is Litmus still obtainable?
No longer obtainable — the unlock window closed September 1, 2026 (Modern Warfare 4 Open Beta). If you unlocked it in time, it stays in your inventory.
What's the fastest way to unlock Litmus?
Litmus can no longer be earned. Its window closed with the Beta on September 1, 2026.
