Pros:

+ One of those maps where it feels like an actual campaign made by Valve.
+ Detailed, good textures.
+ Though i didnt understand it, custom voice acting.
+ L4D1 survivors.

Cons:

- Was that rescue guy even speaking english?
- Special infected sometimes got glitched.
- At the catacombs, you can get stuck while jumping down the hole.

Conclusion:

Overall, a good campaign. I'd more than likely do it again if i had the chance.

Pros:

+ Ufo at start (See conclusion!)
+ Door style + Buttons
+ Jockey egg room
+ Tons of zombies (I killed 4913!)

Cons:

- Finale was great, the head crashed through. However, i didnt know what to do in the first few minutes, but that was my fault.

Conclusion:

How disturbing. Many people have put low rep on this map.
UFO - I figured i had to run into it, so i ran to the Ufo, kept trying to jump on it, and eventually looked up to see a tank right in my face! Loved it :)!

Pros:

+ New start on Map 1
+ Air strikes on Map 2
+ Nice "Run or Die" scheme on Map 3

Cons:

- In map 2 you can get to the saferoom and cannot close the door (before "rescue").
- In map 3, bots die easily, if not instantly.

Conclusion:

Overall i'd reccomend this to other gamers, just make sure you get some friends to come for Map 3!

Pros:

+ Good theme for zombies
+ Ghosts
+ Uncommon common infected
+ Finally a hard finale!

Cons:

- Not a great finale for begginers
- Odd tank noises while inside mansion (I didnt find a single tank in there)

Conclusion:

Not a campaign you want to play with bots! Invite some friends instead! All in all, a great map, but hard at the same time.

Pros:

+ Great Campaign
+ Long
+ Great textured areas
+ Safe room in last map!!

Cons:

- First map when the alarm went off, i couldnt find the switch to turn it off :D! This was my fault as i saw the bell the next playthrough.

Conclusion:

Great map, reccomended for people who like lengthy/hard campaigns.