Pros:

* Nice atmosphere
* Nice setting
* Nice level-design
* Nice layout
* Nice gameplay
* Nicely detailed

Cons:

* Not much, maybe a lack of originality
* Last time I played it, the finale was really crappy, too easy!

Conclusion:

One of the best custom campaigns on Left 4 Dead 1 so far. It really blends with the other campaigns and has this creepy feeling that most of No Mercy has.

Pros:

Everything that is not in the Cons sections.
Kudos for the boat level, I can't even think about how you did it, must have been a nightmare to design, maintain and do the path-finding.

Cons:

* Got lost and walked in circle at least 3 or 4 times and most of the time, I didn't knew if I was progressing or going backward because the streets look all the same. Fair enough though, because levels are huge.
* The event on the first map can be entirely slept through by camping in one of the corners.
* Got a Tank right after exiting the safe-room on the second map and couldn't backtrack to fight it, got killed in the safe-room.
* On several occasions, there was zombies in the rescue closets and I got kicked just after I was saved.
* Unable to fire the event on the second level, I thought I would have to noclip through the door but after wandering around for 10 minutes I found a gray block that I was able to magically teleport in the sewers. I still don't know why an electric problem in the sewers would have anything to do with the door's opening system.
* Bots are unable to correctly navigate in and out the sewers in the second level.
* Global lighting and shadows are somewhat... ugly and it just looks like you just did the absolute minimum to light the environments.
* Most secondary rooms are just big rectangular-shaped hollow rooms with nothing more than 4 walls, a ceiling and a floor. I doesn't really help with immersion.
* I had some huge frame rate issues in the first, third and fourth levels, falling as low as 15-20 FPS in areas with very few details.
* I kept getting stuck in the environment, it seems you didn't clipped the geometry to ease the navigation. It's a nightmare when you backtrack facing a tank and keep getting blocked by every little obstacle.
* Alarmed cars are not red just like the convention Valve used in both L4D1 and L4D2. I think you should have followed this convention.
* There's arrows everywhere to guide the player because the levels are build with too much realism and not enough visual clues on where to go.
* Most of the hordes seemed stuck somewhere and never managed to reach us or too few zombies at a time and where too easy to decimate.
* Why the hell is there crickets chirping on the docks?
* There's a supreme lack of ammunitions or they're located in places you're not even supposed to take a look at because I progressed through half of each levels without ammo.
* Events are uninspired and unoriginal. Is it a national sport to attach trash dumpsters to cranes? Come on, there a lot of props, at least attach a cargo container! Not to mention 3 out of 4 events are classic alarmed doors.
* Scripted events that kill you if you don't react faster than 1 or 2 seconds are just wrong. I'm talking about the falling car in the boat. Again, huge frame rate problems in there.
* The boat level is awesome, I can't even start to think how you built it. I wish it was a bit more easy to navigate into and that you didn't lure players into dead-ends using the lighting.
* The finale is visually awesome but on the gameplay side, it's a nightmare. Hordes need more than 2 or 3 minutes to climb up to the lighthouse and most of them fall during the climb, which means that there's only few zombies attacking survivors at a time when they're at the top.
* The setting is exceptional, but this is not exactly a good idea when there's Tanks everywhere. Each punch throw you a hundred meters out of the cliffs and everyone kept dying from this. In No Mercy, there was a good number of obstacles to prevent you from falling, but here, there's too much holes to punch you though. It's also almost impossible to reach the 'escape vehicle' depending on where you were fighting the finale. It should have parked at the top or in the middle of the area. Not far from everything at the very bottom where it takes more than 2 or 3 minutes too reach.

Conclusion:

One of the most awesome campaign on Left 4 Dead but really need some serious polishing. Didn't tried the Left 4 Dead 2 version but I believe you didn't changed everything in it.