Pros:

- Some good extensions to the map, makes the campaigns longer
- I love Death Toll, it's on my favorites
- This is somewhat of an improvement over the original...valve should take some ideas from this and use it in the port to l4d2.

Cons:

The church guy talks once when you try to open the safe room door, and then proceeds to ring the bell.  And it rings and it rings and it rings, and suddenly it feels like you are in survival mode.  I saw the church bell lit up but had no idea if I was supposed to wait around like in the original or get to that bell and shut it off somehow.  I didn't see a way to get to it.  That really ruined it.  If the time was extended from when the bell starts ringing to when the door opens, it is just ridiculously too long.  

I also got frustrated in the train yard trying to get over to the road.  SI kept knocking me back down and I had to go all the way around again.  Bots were having a hard time with path finding on that map too.  I can see that would be a real let down on versus.  That area needs some work.

I quit after I reached the church and it turned into an infinite survival mode...it just frustrated me.  I might play some more when I have the time (starting at the church), but for now this campaign obviously needs work and is not ready for prime time.

Conclusion:

Some good and some bad changes from the original.  The church guy missing really hurts this and the change that was made just doesn't seem to work or it's not well explained.  If there was someway to get to the church bell to shut it off I didn't see it.  Maybe an arrow or something?  Or is it just glitched?