VG247 � Blog Archive � Latest Left 4 Dead 2 Mutation is Bleed Out Versus
Valve has announced the latest Mutation in Left 4 Dead 2 is called Bleed Out Versus.

It’s basically a version of Versus but without permanent Survivor health, meaning any pill you swallow or how much adrenaline you find – it’s all temporary.
The Bleed Out Versus Mutation is live until next Friday, so this should give you something challenging to do on Halloween.
Get more information on it via the L4D blog