Pros:

-Unique and detailed maps
-Interesting location
-Trigger events made sense

Cons:

-Poor map layout and gameplay for level 2 (three crescendo events and a tank battle)
-Bad witch and tank spawns in level 2 as well
-Finale can be bugged and not start, letting you collect all the cans first and winning without hordes

Conclusion:

Second map was terrible in a gameplay sense. Finale could be bugged, but was alright otherwise.

Pros:

-Unique gameplay
-Silent Hill feel is done well
-Spooks
-Custom textures and tentacle things
-Fun boss battle at end
-Puzzles

Cons:

-No save point between collecting all glyphs and the boss battle. You have to restart if you lose.
-Map could have been bigger with more detail, instead of putting the detail all in small areas.

Conclusion:

Just make a savepoint and this map will be much better. No story either. How did the survivors get there?

Pros:

-New campaign setting.
-Puzzles that work well.
-Nice feeling like there is a backstory.
-LOTS of puzzles at that.
-Variety of puzzles.
-Good weapon and ammo placements.

Cons:

-Ending run AFTER the tank battles was difficult.
-Cutscenes where you cant move, but zombies can still hurt you.
-Some areas too open even though it's supposed to be a facility of some sort.

Conclusion:

Very end makes me cry. Guess we gotta start all over.
 Reference Portal 2 for help with making those large areas seem full.

Pros:

-Unique events
-Voice acting
-Custom sounds and music
-Character scene dialogue, and a lot if I remember correctly
-Most maps were well laid out
-Good finale area

Cons:

-Voice acting super quiet on map 2
-Crescendo events were ungodly difficult
-Map 3 was short, hard, and disappointing
-More quiet voice acting on map 3
-Suddenly in a cave on map 2???

Conclusion:

Some parts were so hard we almost gave up playing the campaign. Nice execution on the voice acting events, but the sound files were way too quiet to hear.

Pros:

-Custom textures, models, weapons, sounds, hud.
-Creative maps. Liked the variety.
-HAS A STORY. Unlike most campaigns.
-Spoopy Herobrine.
-Alright finale.
-Unique events, like tnt, lava, and water on lava.
-Easter Egg. Very nice add.

Cons:

-Sometimes the map loads an extreme amount of armored zombies, and it is then almost impossible to play. Returning to lobby and restarting usually fixes this.
-Hitboxes can be hard to determine.
-Snow particles too thick.

Conclusion:

Great concept. Well executed. Not many bugs.

Pros:

-Well designed maps
-Car pushing was a new idea
-Finale was pretty good

Cons:

-Hard. Hard crescendo events specifically
-Dull areas

Conclusion:

The car crashed surprised me. He sure was going fast.

Pros:

-Realistic maps and environments
-Good trigger events
-Unique sewer area
-Amazing building/finale map. The detail level was very good there.

Cons:

-Lacking some detail in the first map or two.
-No unique dialogue

Conclusion:

I really enjoyed the finale. Even though it was hard, the layout was phenomenal. There was the right amount of grenades and ammo as well.

Pros:

-Nice use of red and red lighting
-A proper story
-Good trigger events
-Well made maps and environments
-Custom weapons (that I didn't use ha)
-Proper sun and time usage throughout the maps
-Custom music

Cons:

-A couple of maps were short
-Finale was a bit hard, for us anyway

Conclusion:

Well made map. Nice additions to the game. Realistic areas.

Pros:

-Great atmosphere (Dark, spooky)
-All the maps were well made
-Easy to navigate

Cons:

-Train finale was hard. Probably just our fault.
-Some environments could have used a bit more
-No unique dialogue

Conclusion:

I enjoyed how dark it was throughout this campaign. It had a nice feel.
The train at the end scared the crap out of me too haha.

Pros:

-Amazing map design
-Amazing map detail
-Amazing events and random events as well
-Dialogue
-Open environment with multiple paths
-Many different environments
-I actually felt like I was playing in a REALISTIC setting. All the props and map designs were well made where things fit correctly.

Cons:

-Tank was invisible whenever he spawned. I use a custom tank skin, so this was probably the cause, but that still shouldn't happen.
-Hard to hear radio voice at end. I could still easily figure out what to do.
-The theater was hard to figure out, and it in itself was hard.

Conclusion:

I enjoyed this campaign thoroughly. Besides the tank bug and theater direction, I really had a great time being amazed at the level of detail in these maps.

Pros:

-Unique setting
-Voice acting
-Creative maps in the Dam

Cons:

-Bland open rooms
-Crescendo was difficult
-Bridge was very difficult and lacked direction on what to do
-The voice acting was bad
-Realism needed for rooms and layout

Conclusion:

I put voice acting in both good and bad. I always love when people try their hand at it. Creativity is needed to accomplish great voices. Unfortunately it wasn't the best.

Pros:

-Well designed forest maps
-Nice change with the factory area
-Crescendo events were well done
-Finale was pretty good, nothing special
-Easy to navigate maps

Cons:

-No extra dialogue along the way
-Lots of trees... lots (repetitive)
-More explorable areas needed (buildings)
-Silly giant plane at the end in a small valley

Conclusion:

I remember liking the part where you go inside the tunnel, it was a nice change, but it was very quick.
The plane at the end clips through the mountains and tower, should have used a car perhaps.

Pros:

-Well created and placed maps
-Unique environment
-Easy to navigate

Cons:

-Finale was extremely hard
-Sewers in level 3 were poorly made
-No dialogue along the way

Conclusion:

Although it was a unique map, some parts didn't stick well and the finale was ungodly. I play all campaigns on advanced and we only managed to get one person alive.

Pros:

-New textures
-Lengthy maps
-Crescendo events that make sense
-Good level design with little to no mistakes

Cons:

-Some bot navigation problems
-Bland hallways every once in a while
-No real story
-Shorter

Conclusion:

I didn't mind the finale being a run to the elevator. I don't remember but I don't think there was any way of the survivors to actually know a helicopter was there to pick them up, like a radio of some sort.

Pros:

Level 1
Nothing special.

Level 2
Train derailment looks decent

Level 3
Boat ride was neat, but short.
Longer map

Level 4
Safe room matches up with last map.

Level 5
Most detailed map there is
Long enough to be an actual map!

Level 6
I liked the bridge at the end

Cons:

Level 1 (-1)
Poor map design
Rocks look out of place, same with hedges
Beginning car is stuck upside down between two rocks???
Bland environments

Level 2 (-2)
Airplane front at beginning, can see there is no backside
Safe Room house doesn't match up with previous map
Rest of airplane halfway through map?
Random airplane parts
Rocks still seem out of place and repetitive
Bland environments

Level 3
Safe room doesn't match up with previous map again
Boring ending safe room. Literally nothing in it.

Level 4 (-2)
Ending area doesn't make sense map wise and realistic wise.
Whole map is just a bridge, with a train event.
Bland buildings and environments

Level 5
Safe room supplies are kinda just laying there again. As if you just plopped down some medkits and guns without thinking in a realistic sense. The medkits are standing up, all four perfectly. I'm sure you know what I mean.

Level 6 (-1)
Finale area is bland
A house and bridge, the cliffs don't go out far enough so you don't see the edge of the map

Conclusion:

I know this review was harsh on map design, but a decent campaign has good map design
Try to think in terms of, does this make sense to put this prop here? Should I put a random half airplane in my map?

In essence, poor map design, poor game play, overall bland environments, and reused props up the gazoo.