I laughed for a good while after that
(Rootop Finale on No Mercy) Everything went peachy until the chopper came. I had been dicking around with the grenade launcher and dual handguns. Unfortunately, all three of them became incapacitated at once. So instead of trying to fight off all the zombies and tanks, find a proper gun, attempt a rescue for all three of them, I just let them all die, to be fair.
On a related note, I've been fucking around with L4D mapping. It's quite a bit more work than for TF2, mostly because of the nav meshes
I do have a crappy WIP though, that is actually playable to an extent. Meaning for it to be some survival junk later on