In the most recent announcement by Valve "Worlds Collide", Valve posted a picture of Nick holding a golf club and piled on the ground are zombies mashed by a gold club... oh wait? What's that? Oh... is that... ZOEY? Hey, look it's Zoey on the second floor! Well, one thing for sure, Zoey isn't one of the L4D1 Survivors who sacrificed themself.

Leaving us with L4D1 survivors who may have died:

Bill <------------ Please not him....
Francis
Louis