A friend messages me, ecstatic about some new L4D campaign he downloaded. Instantly, I had flashbacks to "Death Aboard", with its horrible levels and retarded hot air balloon rescue vehicle (how does switching on a lighthouse call an empty air balloon to your location?)
I reluctantly downloaded this campaign, called "Heaven can Wait"
After a playthrough of it I can say that this must be the best custom L4D campaign I've played.
It looks great, and plays great. Its a huge step up difficulty wise from Valve's stock campaigns. It posed as much of a challenge on advanced as Valve's did on expert. Most of the panic events are surprise events, not triggered by you, which was a refreshing change.
There was a portion where you must fight through a parking garage filled with alarm-rigged cars, and if you trigger too many, the horde becomes infinite, pretty much sentencing you to death.
The finale is not a vehicle, but is still a satisfying ending, especially after a 3 (possibly 4 if you linger around)tank finale ;O
If any of you still play L4D out there, download this and give it a try!