Pros:

Awesome campaign poster
Good length
Well supplied
Good bot nav
Custom content
Eastern European feel
Good transitions
Well designed
Survival maps = fun
New defendable area in Finale
'The Passing' music fits

Cons:

Maybe some variety in weapons
Castle gate event could use more horde or could open faster
Some dialogue is out place

Conclusion:

Holy shit man, that poster is epic and full of win! In my opinion it's one of the best - if not the best poster I've seen so far.

My friends and I've played multiple times through many versions of this campaign and I can honestly say that it's been in my top 5 for a long time and once Versus is added I'm sure it'll stay there. 
The Eastern European music is a great addition to the campaign also glad to see that the crane event was changed, but I'm not too sure about the cable car thing. Maybe you could change it to one of those window washer carts, plus the building is high enough to have one. Problem with my idea is, I have idea how to make it into an event...

As far as the cons go, they're minor ones and probably easy to fix.
As mentioned by RainingMetal, a lot weapons throughout the campaign are static - like the pump shotgun the UZI in the first saferoom, for instance. Also mentioned before: some of the dialogue is out of place. So far I've only noticed Nick and Ellis say some about passing through the mill on the Freeway map, whilst passing through the wrecked fuselage [current version].

Thanks for all the support you've given and I'll update the review once versus is implemented, or when something else has been given a major overhaul.

Pros:

All game modes work great
Custom music for additional atmosphere
Nice Finale
No nav issues
Layout and detail
Location variety and logical transtions
The listed ship and its trap
Well supplied campaign
Lengthy

Cons:

Author/porter abandoned the project
Disco Ship
Custom music issues
A few missing infected ladders maybe

Conclusion:

First off, it's a solid campaign and all game modes are present plus they all work great!
Both Survival and Scavenge are neither too difficult or easy, which guarantees fun for both teams and that is the most important aspect of gaming. At least I think so.

The campaign could use a few Infected ladders at some points. One example is the 3rd map. After you've gone through the drainage and before the catwalk up into the warehouse, if you shoot the alarm car, or wait for a horde a large portion of the Infected run through the sewer instead of climbing up the wall or dropping down from a possible hole in the roof. The ladder is a chokepoint that takes away the threat of the incoming horde. Same with most Special Infected.

The Finale location is beautiful and like how it's set up. You can hold out in the lighthouse for the vehicle to arrive or gradually make your way down to the docks as there are several places with an ammo pile, some throwables and health items/defibs. The difficuly of the Finale comes mostly from where you're holding out, though.
The only sad thing is that the Finale didn't remain at night time. The whole point of activating the lighthouse to signal the rescue vehicle is lost. The nighttime setting brings some extra difficulty with it. But it's good as it is.

Personally I'm curious how a Gauntlet Crescendo would do in the second map's gate event, because most of the time the Witch in the parking lot isn't much of a threat to me, even with 3 bots. But a Gauntlet isn't necessary as this works good, too since the .50 Browning can't aim down too far, making you rely on teammates a bit more.
The bots have some issues with the ladders in this area. They don't hold onto them, but rather jump down into the sewer. It's a minor issue though.

I like the custom music - it adds a feeling of darkness and/or threat to the campaign. Separately the pieces are good, save for one or two that last just a splitsecond too long and the tendency to play simultaneously or overlap each other. The best example I have found is on the Finale once you set foot on the beach an epic piece starts, 2 or 3 seconds in a mood piece cuts in and it kills the epic piece.

And yeah, the disco ship is kind of unavoidable as a con. It nearly killed my depth perception in the ship's bowels. I know lowering the shader details to medium 'fixes' it, but from what I've read it's (quite) easy to fix permanently.
But the big plus is that the ship looks and feels awesome and it has a trap, which made me laugh my ass off. Now it's quite easy to avoid, but still funny when other people don't know and get angry about it.

Pros:

Layout and detail
No nav issues
Decently supplied campaign
Great .50 Browning MG placements in Finale
All special tier weapons are present

Cons:

A bit short for 3 maps
Midnight Rider phrases at Finale
Special Infected spawn before you start the Finale

Conclusion:

Had a blast playing this with a few friends. I don't know why some people try to kill a Witch with an SMG, but it makes for brutal fun!

Not really sure why there's an ammo pile at the start and I've noticed that there isn't much variety in weapon placement. The SMG is always in the salon and the shotgun is always in the bar. The weapons could be placed above the medkits for a change or in the back alley. Yes, the Witches are there, but it'll be challenging to get the weapons that way.

I liked seeing the overrun Safehouse in the 2nd map and several Special Infected in the area that almost tell the story of what happened there.

There's a medkit glitch that happened several times both in single play and coop and it seems to be the left medkit closest to the wall that duplicates itself 2 or 3 times. I'm not really complaining, as it can be useful for a badly injured teammate.

Multiple M60's, an M79 and 2 great .50 Browning MGs may be a bit much for a Finale and those weapons are all capable of killing a Tank in several seconds alone. When combining that kind of firepower a Tank may just call for evac himself. However using it together is no guarantee that everyone makes it out with endless Tank spawns when the chopper arrives.

And speaking of the chopper, when it arrives Ellis will often say "The Midnight Riders save lives!" Er... I'm sure they do, in some way, or another but it doesn't fit the setting where nothing points to The Midnight Riders being in the area.
If you could change those Dark Carnival lines into something more fitting, that'd be great.

Pros:

Long maps
Challenging and fun
Mini-Finales
Layout
Feels like a desolate city
Very good bot nav
Great placements of supplies and variety
Unique Finale
Survivor dialogue
Multiple paths
Alarm car filled street
Hard Rain Thunder, but not the heavy rain

Cons:

First few frames of the intro cutscene are buggy
Bots forget medkits
Missing Tank music in Finale?

Conclusion:

It's clear that this campaign has been made for those who like a good challenge. Unfortunately for me, my friends hate this map because it's too long, too hard and too whatever. It's their loss really - so I play this map mostly alone, because I can't find any multiplay games for this and if I do, the people I play with, litterally shoot EVERYTHING that moves and say they thought I or someone else was an Infected... personally, I've never seen any aura'd Common Infected carrying a weapon with a name above it.

The best I've been able to pull off by myself so far, is completing this - contrary to popular belief - on Advanced. Sure, it took me nearly 4 hours, but I felt satisfied once Nick and I made it out alive.  I have to say, the bots can handle themselves rather well in this campaign.
And Bile Bombs are your friend in this campaign. Never before have I tossed so many Bile Bombs to keep my human and A.I.-controlled teammates and myself alive.

I like that fact that you've used mini-Finales in this campaign. The Drawbridge event felt more like The Parish Finale - due to it's lengthy run to the Safehouse - than a regular rolling crescendo, like the one in Back Alley. And normally I'm not too keen on scavving Finale types, but The Outpost scav event is just pure fun. Though why doesn't it just drive through the barricade, because I wonder how it stops, takes aim, fires and then drives on.

Another weird thing were my random deaths in a dead end stairwell in the Waterplant map, after the cubicle office. It happened twice in different playthroughs, but at different places. The first time I had reached the bottom and died when I think I touched the locked door. The second time it happened on the last few steps of the stairs. There weren't any Infected and my health was 70/80'ish. On the upside, I don't go there anymore, since I've never been able to find anything there, so it's no big deal really.

Personally I don't think the Finale battlefield is small, since you can head up the escalators, circle around and go back down the other side. Best way to take down Tanks for me. The trains on the tracks, yeah it killed me, but some custom camapigns have insta-kill or incap traps in them so that didn't surprise me and it was a nice touch, which makes the Finale harder.
The only thing the Finale could use, is at least one of each throwable near the ammo pile.

As for the cons, there is something strange going on in the Intro cutscene. The first few frames shows a train appearing and disappearing twice before cutting to a new camera point.
In the beginning of The Waterplant, the bots can forget to pick up their medkit. Leaving the safehouse and returning fixes that as mentioned in a different review.
The missing music for the Tank in the Finale is just a minor con. I haven't played this campaign any less because of it, though I'd like to see the cons fixed.

Awesome campaign, but not for everyone.

Pros:

Great map layout
Level of detail
Good map transitions
Intense finale
Bot nav
Clear directions
Awesomely fun in Versus!

Cons:

Only 1 Tank in the finale
A bit easy at some points
Sometimes a bit too generous with supplies

Conclusion:

I don't know why this campaign is so much fun in versus, but it is. First time playing this map I saw a few places that I wanted to check out in versus and they all worked great. The finale is just impossible to complete in versus as most finale are, not that I care too much about this while having fun.

I was happy to see and hear that you didn't use the Hard Rain weather effect. I don't think it'd fit very well here and I don't know why, but in many games, bad weather is a thunderstorm. Just plain and simple rain in bad weather, too.

The floodgate event in map 3 is easy, especially with the ammo upgrades that spawn there fairly regular. It's a small area, but the zombies have to climb the fences and once the first floodgate is down, a rather large amout of zombies run over that lowered floodgate. It's really easy to kill the climbing and running zombies without taking much damge - even with bots.
If I may make a suggestion: decrease the ammo upgrade spawn rate or throw in a few more Special Infected.

Then there is the alarm car with the planks on top of it. At the fenced in sidewalk cafe (don't know whatelse to call it) there's another place for ammo upgrades to spawn frequently, making this event easier. A few times I've had ammo upgrades spawn at both places. That's a bit much in my opinion.
Even if the ammo upgrade doesn't spawn it's easy if you have all players/bots on the planks or the metal stairscase. Just for the hell of it, throw in a Tank when you hit the alarm car or have a set spawn place for the Witch at the window or the hallway you have to go through.

Like many others, I like the finale - but it could use another Tank on the roof. That way, the mounted machine gun could see some action too. Right now it's just scenery - at least every playthrough that I did. I, nor my friends, never had time to use it because by the time I/we stepped onto the roof and made my/our way over to the .50, the helicopter arrived. There are also propane tanks and jerry cans on the roof, which could be used against the 2nd Tank.

Good campaign overall and hope to see more work from you!

Pros:

Multiple routes
Playable piano!
No problems with bot nav
L4D1 Sacrifice Tanks in the Finale
Enough weapons and throwables
Tougher than average
Good length

Cons:

I had to kill a friend because he got stuck
Sometimes a bit too dark
Riot infected didn't fit the setting
Could use a few more pills/adrenaline

Conclusion:

Played this campaign several times now and for some reason my friends and I are incapped more on Advanced and Expert then average. I'm not certain, but there seemed to be more infected during hordes, or it's the forest setting with zombies hiding between the trees. 

I think it was Forest Highway, where my friend got stuck between 2 large boulders and the map's wall. He jumped and crawled around trying to get out and said that there's some sort of ceiling preventing him to get out again by jumping alone. I know it's not a very good description because there are similar places within the forest.

I felt that this camapign had a good length for 5 maps and it's difficulty. We've had a good time playing and had several "Oh shit!" moments with Witch and Tank spawns. I liked seeing a wandering Witch at night at the car pile up at the Riverside sign.

Don't have much more to say about this campaign, thanks!