Pros:

- Enjoyable campaign
- Each level was a comfortable length
- Beautiful level design
- Rescue by truck. Awesome!

Cons:

- Perhaps too many pills, throwables, pills, ammo, pills etc.
- Did I mention pills? LOL!
- I don't know if the Director had it out for me, but for every two bottles of pills I found, I could hear the gurgling of another Boomer. 

Conclusion:

I really had a good time with this campaign. There were too many Boomers for my taste, but that could have been the Director messing with me. Lot of tanks too.

There were lots of great little moments, like the car falling. The finale was very cool as well, especially since all of my team made it into the truck. Probably because a tank had them cornered inside!

Thanks for the fun campaign!

Pros:

- Excellent level design
- Excellent atmosphere
- Lengths of each level was comfortable
- Easy to navigate, even with detours

Cons:

- Trouble with bots wandering off, leaving me by myself to get killed by a hunter, horde, etc.
- Two bots kept going back to the suspended wooden plank  and only to end up needing rescuing. And then, they'd do it AGAIN....  
- [POSSIBLE DIRECTOR ISSUE] On one occasion, the safe room at the beginning of part three had no ammo or health. After I died later on, the level restarted and everything was there.

Conclusion:

First of all; GREAT JOB!

I really enjoyed this campaign. The multi-level caves had my team looking in every possible direction because we felt very exposed, especially from the looooooong tongues of the Smokers. LOL!

The finale was disorienting at first but once I caught on, it was fun. There was no indication, whether dialog or text on the screen, that the radio was working, but that's a minor nit and in no way hinders gameplay.  I would add a second turret and position them more towards the corners for better coverage.

Thanks again!

Pros:

- Fast paced
- Adds a new style of play to L4D2
- Easy to get the hang of 
- Plenty of hordes, the occasional SI, and of course, as Louis would put it, "TANKS!"
- Not as easy as it looks
- No lag

Cons:

- Was confused about what I needed to do to start the action 
- Bots tend to shoot the barricade you are building, while you are building it. (smooth! LOL!)
- Installing metal safe doors can be tricky because it may lift you and/or your teammates outside, with no way back in. So be careful!
-Why did everybody die just before the final animation ended (after you finish the level)? Bummer! :)
-That's it, I think. And these cons don't affect gameplay that much. Just adjust your play accordingly if need be.

Conclusion:

First of all; GREAT JOB!

I had no idea what I was in for when I d/l'd this campaign, but I'm really glad I did. This played like a fast-paced survival map which had you running all over the place, desperately trying to close up the four gaps that were allowing hordes, SI's, and tanks to get inside. 

I played with bots, but if you can play co-op, you can pair up and get each task done more quickly.

The fact that there are going to be five maps has me very excited to see more!

Like I said, my cons are more amusing observations, rather than harsh crits because I really liked the map. Just watch out when installing metal doors! LOL 

Pros:

Lots of Hordes and SI's
Interesting concept
Truck and tram rides were very cool

Cons:

Little to no dialog from bots
Textures of buildings need rework especially bricks
No health in some safe rooms
Found pills and pipe bombs ONCE
Little to no tier two weapons
Incomplete skyboxes (level 2)
Bots frequently wander off, away from the group
etc.

Conclusion:

To be honest, I don't have any experience in making maps, so I'm commenting strictly from a gamer's POV. A lot of the campaign gave off the feeling of being rushed or unfinished. Skyboxes filled half of the sky, and then you turn around and there's nothing up there. Supplies and tier two weapons are extremely scarce, to the point where players are competing for the few health packs and pills that are provided. After a while, it became frustrating to play.

I hate to leave you a negative review, but I hope I can be helpful in my comments. If you can go back and revisit what you have and build upon it, I think you could have a very good campaign.