Left 4 Dead (L4D) cooperative first-person shooter video game glitches & tricks: This glitch consists of falling through the elevator floor from No Mercy 4.
People will fall through when you throw something at them. Molotovs,pipe bombs, oxygen tanks, propane tanks are confirmed to work. I haven’t tried using gas tanks but I doubt they don’t work.
Also, this glitch doesn’t work unless you delete the patch.
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