Left 4 Dead 2: Portal Underground 8 Survivors Playthrough

[Map Synopsis]
As the survivors went underground, they stumbled on an empty facility well thought it was empty. They will attempt on resurfacing on what ever means possible.
[Map Download]
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[All 8 Survivors Mod]
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[All 8 Survivors Mod Tutorial]
• [Left 4 Dead 2] How To...
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