Pros:

Solid design throughout.
Varied locations with good detail.
Inventive events.

Cons:

Some of the single levels are a bit long.
Too many 90 degree corners.

Conclusion:

This campaign ranks among the best of the user made efforts, along with  Detour Ahead, I Hate Mountains 2, Dead B4 Dawn and Death Aboard 2.  The details and thoughtful design persist from beginning to finale.

My only issues are with the following:

Much of the map traversals consist of:  move, turn 90 degrees, repeat.
There are some areas that stray from this forumula, like the beautiful riverfront town and the arena finale, but the rest is a series of 90 degree turns.

The event with the fire and the boat can be easily glitched if a charger knocks survivors into the fallen bridge before the boat arrives.

Other than that, this is a must play - one worth going back to.

Pros:

Fantastic, light hearted but spooky theme.

Nice set pieces - flashing faces, ambient sound and lighting, etc.

Dark - I miss the dark.

Nice general flow and pace.

Consistently good detail throughout.

Cons:

Invisible wall keeping a spot from being a great deathcharge location (collapsed side of the tracks).

A missing texture at the fireplace.

Some haunted house cliches not exploited, but I am nitpicking here.

Conclusion:

This is a really solid effort in a different direction that provides some nice diversity from the standard L4D2 campaign.

The spookhouse feel is consistenly maintained with many great effects and sets.  The author is incredibly creative, but not at the expense of faulty design .  Despite being in beta, the general gameplay mechanics are solid and the pace is quite good.

 I was expecting a couple of more haunted house chiches to be exploited, like traps, more ghosts, strobe lights, etc - but instead of getting a "holy crap" moment, you get a heaping dose of "that's neat" moments.

Cons are listed above.

I will be sure to look for updates - so far it is looking to be a keeper.  The score reflects that, while in beta, there is room for improvement.   Fantastic work.

Pros:

Fresh location.
Great mechanics with the ski lift.
Nice detail and lighting.
Much different feel from other maps.

Cons:

Interiors of buildings could use a little more diversity.

Conclusion:

This is a really fun map for survival and scavenge.  The ski lifts make for interesting decision making in both play modes.  Some might complain about people camping on the lifts as they ride around, but they are really easy to pull off and rock snipe.  Great work.

Pros:

Better size from original.

Inventive finale.

Used some of the best parts of the original.

Cons:

Too many buildings are all brick or cinder-block on the inside.

The fog needs to be darker or the sky needs to be brighter.  They clash with one another.

A couple of areas in maps 1 and 2 seem to be the same:  too much unity, not enough variety.

Conclusion:

I like some of the areas in these maps like the bridge event and the finale. 

There are a couple of visual problems that make these maps look unprofessional:

1)  many buildings in the far distance are sharp and dark (no fog), where closer structrues have a very light-colored fog effect.  The sense of perspective is killed with these being backwards.

2)  the fog color is a lot lighter than the sky.  It makes the buildings and trees look very unnatural when they are viewed against the sky.

3)  most building interiors are textured with the same brick and cinder-block, with exposed pipes.  It is rare to see a building with brick and block interiors, unless they have yet to be finished with drywall.  This might be ok for one building if it is still under construction, but we have it here in almost EVERY building, with also feels and looks very repetetive.

4)  the tight travel path on the street level with the fence is done a few too many times here.

I hope this helps, and I hope to see more.

Pros:

Good detail and design in most parts.
Good flow from one location to another.
Avoids all-to-common maze of 90 degree turns.

Cons:

Misplaced props (see details).
Sluggish framerate in parts.
Misplaced items (see details).
Structures appear out of the fog as you get closer.
Some nonsensical mechanics (see details).

Conclusion:

This is close to becoming a really great campaign.  The setting is similar to the Passing, but just different enough to give it a unique feel.  The locations have a nice realistic look, and the flow of the game is solid.

Some of the areas are constructed to be a bit too large, and you will see props like trees appear and disappear out of the fog as you change proximity. 

There are some props and items that are out of place.

Map 1:  merely feet away from the helicopter crash, there are neatly arranged items on a table, and the area directly around the crash contains no debris, burn marks or fire.  It looks like the model for the crashed copter was neatly lowered into a clean area.

There is an ammo pile a couple of yards from the saferoom door, which also contains an ammo pile.

Map 2:  You will see a power-line tower appear out of the fog right before you get to the edge of that part of the map.  There is no need to put it there if you only get to see it for a brief moment.

Maps 3: There are two alarm activated, human-width drawbridges (like the event in the Death Toll sewers) right next to one another.  Why would anyone build two of these side-by-side?  This type of structure placement makes no sense mechanically nor logically.

Right when you come out of a door and take a few steps into the streets, a building on the other side of the hedges pops out of the fog.  Move the border and building a few feet closer and you don't have the dissapearing act.

There is a wood board bridge resting on an alarmed car.  This is another structure that makes no logical sense.  Whomever placed the board or used the bridge beforehand surely would have set off the alarm.

Map 4:  Having a rolling crechendo up an office building to the roof sounded like a good idea to me, but playing it is a bit of a drag.  You don't get the sense of urgency that you do on the Parish bridge until you get near the top.  Until then, it is the same slog from one zombie packed stairway to a drop down through a hole in the ground to the next zombie packed stairway.

These maps certainly have their charms and are worth checking out.  The author shows some solid design using familiar mechanics.  But in my opinion, some radical reconstruction is needed to help the framerates, limit the structures that appear out of the fog and make some of the mechanics more logical.

Pros:

Solid construction throughout.
Good lighting and details in most parts.
Entertaining roof levels (but would be difficult in versus).
Good use of directional hints.
Van event is a nice throwback to Dead Air.

Cons:

Streetlamps in the arena look very awkward.  There must be a better prop for this.
Some apartment interior hallways are very bland, and seem untouched by the apocalypse.
Exploded tanker in the middle of the street, but the stores on both sides are prestine.  Would a fireball explosion not damaged and burnt them?

Conclusion:

There is solid gameplay experience to be had here.  Versus would be quite difficult on the rooftop levels, since there are so many death charge spots on the sloped rooftops.
Everything seems relatively consistent in quality with the exception of odd streetlamps bolted into the arena grass, and disconitnuity with distruction and surprisingly clean hallways.
I would recommend the following:

Make some rooms and interiors unique from others to make them stand out.  There is a cookie-cutter effect here with so many rooms that look identical.

Replace the arena streetlamps with another, more appropriate lighting prop.  There must be something good in the Dark Carnival arena finale that can be used.

Destroy and burn the buildings next to the shreaded fuel truck - a bit of a visual narrative to let you know that there was a big explosion here.

Perhaps make one building and its interiors on fire to add an extra dynamic and let it stand out from the others.

Pros:

Great scenes of destruction.
Good mix of open areas and close combat.
Inspired and dramatic lighting in parts.
Epic feeling finale.

Cons:

Some areas are sterile and clean looking, completely untouched by the apocalypse.
Missing textures in map 2 under two opposing streetlights on a corner just before you get to the saferoom.

Conclusion:

This is a solid effort with great ambience that is very close to being a keeper.  The devestation in the city is impressive - I have not seen it so well done before.  This along with some well placed dramatic lighting and we have a winner.  A couple of textures are missing (described in cons), and there is a little discontinuity between the awesome warzone and some amazingly clean and orderly looking interiors inbetween.
Great work so far.

Pros:

Good urban combat.
Excellent details captures the apocalypse look and feel.
Decent lighting.
Urban street level scaled appropriately (most streets and buildings are done too small).

Cons:

Mismatch of fog color and sky color - tall buildings look awkward against the sky in level 2.
Elevator shaft ceiling clips into the top elevator housing and mechanics in level 2.
Nothing new in terms of visuals or gameplay.

Conclusion:

This is on its way to be a solid urban campain.  The layout is nice - a mix of tight and open.  There are a few visual issues described in the "Cons" field.  The detailing is excellent - it really seems like a world that had been lived in and destroyed.  Great job so far - I am looking forward towards a more polished version.

Pros:

Unique setting.
"There and back" seldomly done.
Great fire, ice, water and smoke effects.
Immersive until the finale helicopter barrier.

Cons:

The red escape vehicle barrier.
Construction area a bit repetitive.

Conclusion:

This campaign has an entirely different feel from other user made content.  It has the Hard Rain mechanic of the return trip, but with a contrasting ice theme on the way and fire theme on the return.  The only level that was virtually the same was the second and second-to-last construction level.  Sadly, it is also the most repetitive visually and you have to do it twice.  I would have liked to see the fire breaking through the return trip construction level as well, and smoke arising from the roof finale.
The only thing that ruins the immersion is a red barrier that keeps you from getting to the helicopter until it fuels.  Is there another way to do this?  Perhaps a ramp that drops down like the airplane at the finale for dead air.  We would assume that there is a pilot in the helicopter, and he would raise the ramp to keep zombies out of the back.
A nice change of pace over all.  It is a keeper for me.  Well done.

Pros:

Outdoor areas are excellent.
Good finale.

Cons:

Indoor areas are a maze of constant 90 degree turns made of  boxes, shelves and fences.
Interior brick wall texture is visually clashing.
A lot of empty rooms.

Conclusion:

This campaign starts promising - a beautiful but short run through a nicely constructed outdoor area outside of a fort.

This is followed by generic, flat grey rooms with a maze of shelves, boxes and generator prefabs, and then another maze of tight office hallways. 

Every time you get to go outside, you are treated to a very realistic looking place with some nice detail and construction.  Sadly, the majority of the time is spent indoors with the bland design, layout and colors.

For the finale, the rain was falling without a sound (only occasional thunder).  The finale layout is similar to the No Mercy rooftops, but with washed out greys and a military theme.  It was a nice layout, but it was difficult to find the radio (which had no audible radio message once activating).

If the indoor areas were made to look unique and interesting, this would be a definate keeper.  As of now, they are just a slog to get through to enjoy the outdoor excellence.

Pros:

Great lighting.
Good details.
Good flow in parts.
Outstanding outdoor areas (swamp, but not a Swamp Fever ripoff).
Nice fence demolition at the cemetary.

Cons:

Structures appear out of the fog as proximity changes in maps 1 & 2.
Some structures make no architectural sense.
End of the world water behind the last saferoom.
Perhaps too much canabalizing of stock maps.
Intro poster has some nonsensical grammar.

Conclusion:

There is good potential here:  a solid set of maps at parts.

Too often I found myself pointing out structures from other maps:  Parish buildings, Passing shops, Dead Air scaffolding, etc.

There are also structures that make no sense:  in the 1st map, there is a hotel with a staircase that leads up to a interior balcony like hallway, where you have to turn 90 degrees twice before you get to the first door.  Yet on the first two straightaways, there are no doors, or reasons to have access to them.
There is a door in the back of the pool hall that leads to a small alley just off the main street.  When you walk outside, you can not get past the open door unitl you close it.
These are just a few examples.

The fog effect that accompanies the strom surge stays with you even when indoors in the first two maps.  Also, you can see structures appear and disappear through the fog as you get closer of further away.

The campaign improves once you get to the swamps.  They are dense and believeable, with good lighting.  Surprisingly, they do not look at all like Swamp Fever - well done.  The framerate takes a hit in a few parts thanks to the dense folliage, but I am sure that can be smoothed out with some work and structural sacrifices.

There are a few paths within the maps that are a bit too obvious a maze of fences, vehicles and props.  Every turn in the maze is a 90 degree turn.  This kills immersion.

The zoo was a nice choice for a unique area.  I would have like to have seen much more of the zoo, perhaps large bear, elephant  and lion dens.  This concept could be fleshed out for an entire map, which would really stand out as unique if done well.

In the last map (before mine crashed - I don't know if there is more afterwards), it looks like you reach the end of the world.  There is a body of water that is clipped on two sides, so you can see an obvious corner.

So good job so far.  I would like to try this again after an update.

Pros:

Nice and dark.  A welcome change since we have so many daytime maps.
Good detail in most areas, with believeable transitions from one safehouse to the next.
Good match of skybox and fog.
Perfectly sized campaign to give us variety.

Cons:

Most combat is on the horizontal plane.  You never have to worry about what is above you.
Saferooms needs something to make them stand out.

Conclusion:

This is a nicely sized campaign with some good visual detail and an appropriate use of  darkness.

The geometries are almost entirely on the horizontal plane.  You never have to worry about what is above or below you.  While this can be said about campaigns like Swamp Fever, there were some two story structures to break up the levels.

The finale is not unlike the Death Toll boat rescue, but the tavern location only has one floor and roof access.  

I recommend the following:  consider a couple of two story structures in the outside areas to give you some vertical threats.  You can give the two saferooms some variety by making one colored with red light from an emergency light, regardless, both need to be dimmed to make look more realistic.

There are some good things going on here, and the author is making great strides to make the campaign better.
Keep up the good work.

Pros:

Some nice detail and unique areas in parts.
Good setting for the finale.
Consistently good lighting.

Cons:

The rolling crescendo in map 1 is too long and maze like.
Map 2 has nothing that makes it stand out (map 1, but with witches).
Some prefabs in awkward places.
Bots will not travel into the sewers under the bridge.

Conclusion:

There are some great moments here, bound together with a lot of similar areas and mechanics.
Map 1 is detailed and littered with destruction, but with a rolling chescendo to the safe room that is way too long, traversing through  a predicatable maze.  This would be a frustrating ordeal in versus, given its length.

Map 2 looks just like map 1 but with less attention to detail, and filled with witches.

Map 3 on the roofs is a good time.  We don't see a lot of roof action these days.

Some prefabs look really out of place.  There is a crashed airplane in the water next to the bridge.  The only way it could have gotten there is if it was gently lowered from the sky, from directly above.  Shortly afterwards, there is a panic event at a sewer entrance that the bots will not go into.

The campaign really picks up in the finale.  It is not unlike the passing finale, but in a new setting.T

With some hit-and-miss detailing and design, there is certainly enough here to appreciate and enjoy.  I would like to see the map tightened up a bit, filled in a little more in spots (like long, empty tunnels) and perhaps with more diverse lighting to break things up.

Pros:

Draw bridge event.
Tank (vehicle) event.
Unique finale location.

Cons:

Mismatch of sky-box and fog.
Structures appear out of the sky as proximity changes.
Commons will spawn right in front of you at the end of the drawbridge.
Uneven flow.
Way too much unity, not enough variety.
Over use of the same textures - brick and cinder block for exteriors AND interiors.
Door alarm after door alarm after door alarm.
All brick building, linear path through street fencing, cars littered streets, repeat.

Conclusion:

I liked individual moments of the last three maps, but they are bound together with the same thing over and over:  the same kind of architecture, the same textures, the same horde events, etc.  Using bricks for both interior and exterior textures doesn't make the city feel destroyed, it makes it feel like it was never completed, then destroyed.
Along with the fog/sky color mismatch, these problems have existed since the first release for L4D1.

There are set pieces that do work here:  the finale, the scavenge event for the tank and the drawbridge.  But the redundancy of the visuals, the mechanics and the structures take away from the charms of the more unique areas.

I think this campaign would do very well with a good deal of editing.  Perhaps a more streamlined campaign of four maps, using the best parts of the six.

Pros:

Faithful port of maps made for a 6 year old game.
Nostalgia.
Good finale.

Cons:

Faithful port of 6 year old game.
Too many snaking, tight hallways in buildings.
Washed out lighting that clashes with the skybox in parts.

Conclusion:

Like the Ravenholm maps, this is a great map for nostalgia freaks.  For the casual L4D2 player, it is ok for coop and versus.  Despite the cutting edge visuals of 2004, the maps don't translate well for L4D2 gameplay mechanics.  These are maps made for a single player FPS, and contain too many tight indoor corridors for consistent versus play.

Pros:

Great nostalgia.
Good use of lighting.
The dark.  We need more dark L4D2 maps.
Classic design with good flow and sense of direction.
Versus capable.

Cons:

Broken event at the church.  This is the biggest problem.
In versus on map 3, if an SI spawns at the saferoom and climbs above the traincar onto the building, you can see through the top of the traincar and through the roof of the next building over.

Conclusion:

Great in versus, a bit too easy in coop.
Despite the few errors, I like this more than ClamToll, as I think the flow and pace is much more solid, thus making it better for versus.  With a few more tweaks (which I hope are comming), this will be on regular rotation for me.

Pros:

Faithful rendering
Good lighting
Nostalgia

Cons:

Doesn't suit L4D2 gameplay mechanics well.

Conclusion:

This is a map for nostalgia freaks.  Sadly, it was designed for a different game with different mechanics from a different time (has it really been six years?).
It is a solid port, but doesn't hold up for this game and this style of play.  There are too many tall laders, too many flimsy ledges, too many 90 degree angles in the architecture...despite its strengths in visuals and fond memories, it does not make for a rock solid coop or versus experience.

Pros:

High quality design.
Unique escape vehicle.
Unity and variety of locations.
Inventive listing ship level.
Great pacing and pathways.

Cons:

Some areas look more fantasy like than realistic
(the ceilingless prison at the spawn point of the first level and the lighthouse).

Conclusion:

This is an inventive and solid map throughout.  While each subset offeres a different feeling location, the journey from one to the next is logical.  While some areas are exaggerated in design and look a bit fantastical, the experience as a whole is a joy.

Pros:

Nostalgia.

Cons:

Awkward lighting - gives an unnatural look to the levels with the skybox and shadows.  

Conclusion:

It is nice to have this great map to play with the dynamics of the L4D2 SI.  But the new lighting kills the imersion - there is a disconnect between the ambient lighting and skybox.  I appreciate that the author is trying something new, but we HAVE daylight levels.  People have been railing Valve for not including more dark maps in L4D2.
I would love to have this map with more natural light - the original had the balance of light and dark dialed in.  The brightening of the map demolishes that design balance and gives us a lesser experience.

Pros:

Great flow.
Realistic looking world with logically placed structures.
Consistent quality of design throughout.
Unity and variety of locations.
Fun finale, if not original.
Versus capable.

Cons:

There isn't anything unique in the design nor the mechanics of play.

Conclusion:

I consider this map to be one of the best of the best.  While there are no standout moments of wild inspiration, every moment is of rock-solid quality.  There is a natural flow here, not unlike the official Valve maps.  You feel like you are in a world that has been lived in and abandoned.  The imersion is there, the pace is there and the balance is there.

Many maps have moments of inspiration in a dud of a whole.  Detour Ahead is the opposite:  a jem throughout, but with no surprises.