Pros:

-Nice long campaign that is far from a pain to complete in one sitting.
-Pretty easy to navigate.
-Enough supplies placed.
-Plenty of weapons, both guns and melee.
-No problems from the bots. At all.
-Can take your time and explore without fear of constant horde spam (something a lot of custom campaigns tend to do).
-Plenty of wide open spaces.
-Plenty of defibs and frag/incendiary ammo. 

Cons:

-Not many throwables at the finale.
-An arrow directing the players to the boat would be helpful. I found my own way there with no problems, but other players might wait at the radio until the final run.

Conclusion:

You weren't kidding when you said 3 hours of zombie killing action! If anyone else here plans to make a long campaign, this is how you do it. Everything felt it was pieced together just right with a decent amount of supplies scattered throughout. There was never a moment where I felt frustrated or annoyed with anything as I played through. Very well done. A must play for players of any level.

Pros:

-Nice environments.
-I loved that area with the pool.
-Jumping down a well to proceed was new.
-Maze full of witches (not for the faint-hearted!)
-Never got boring.
-Decent amount of supplies and weapons.
-I saw Bill!

Cons:

In the first map, one bot tried to teleport into the saferoom and died instantly. Not sure what happened there.
-The bots just would not get in that elevator. I had to wait until they were all dead or incapped before it would let me proceed. I think I managed to get one bot in once, but I think that might be a one-off.
-The office building felt a little empty. Could of done with more props.

Conclusion:

This was a lot better than I was expecting. The transitions from one environment to the other was great and didn't feel awkward at all.

Pros:

-Interesting and challenging.
-Different environments.
-Nice detailing.
-I quite liked the part with the bridges.

Cons:

-It felt like quite the hike to get to the finale.
-Rescue was misleading. Some truck explodes and clears a path, making it seem like that was where we needed to go, but an invisible barrier (or prop) was in the way. I had no idea that I had to go back to the army trucks to find the rescue vehicle behind them.
-Lack of directions in places or hints would flash on the screen for a split second and never appear again.

Conclusion:

The only thing that really lets this campaign down is the finale, especially when rescue comes. But other than that, this is a very challenging campaign. 

Pros:

-Cool intro.
-Great setting.
-Challenging and fun.
-Lots of items and weapons.

Cons:

-Too short.
-Missing textures.
-Bots kept breaking the planks during the finale.

Conclusion:

A very fun map but way too short. Better to play this on advanced or expert.

Pros:

-FPS arms.
-Animations work fine.
-No bugs that I'm aware of.

Cons:

-Her coat sometimes looks a bit odd, but nothing major.

Conclusion:

She works like a charm.

Pros:

-FPS arms (they don't really take up too much of the screen for me).
-...Well, she's easy to spot if her player decides to wander away from the group.

Cons:

-Now and then her animations glitch, but it is no biggie.

Conclusion:

I'm not gonna put her large size in either box since it can't be helped. At least she's easy to spot.

Pros:

-It's Batman. That's worth, like, 20 pros right there.
-FPS arms.
-Animations look fine.

Cons:

-It's Batman. That negates all cons (not that there are any, mind you).

Conclusion:

What else can I say, apart from quoting the obvious?

Pros:

-Different, yet fun.
-Challenging.
-Sort of doubles as a training map.

Cons:

-Bots were very suicidal with the ledges on the first map, but after that they were fine.
-Lacked directions. Some arrows pointing the way might of helped a little. Too easy to get lost.
-I had no idea where to go at the finale when "rescue" came. Again, some arrows pointing the way would of been helpful.
-"Rescue" was a room. Kinda anti-climactic.
-A lack of closets. If anyone died and there were no defibs, that was it until the next safe room.
-Lack of melee weapons.

Conclusion:

Despite all of the cons, this is a pretty fun map and is useful for training yourself to get in defensive positions when under attack. Needless to say though, it could do with a couple of tweaks.

Pros:

-Cool environment and designs.
-The museum/gallery was fun.
-Challenging events (but one in particular was frustrating. See cons).
-Plenty of supplies and weapons (especially after the gallery part).
-Easy to find your own way around.

Cons:

-Some parts felt empty and lacked decorations.
-Some areas looked too clean for a zombie apocalypse.
-The elevator part was almost impossible to get through. We were getting attacked by several hordes and up to four specials at a time, leaving most players incapped or dead. Even on the easy setting it was tricky. 
-Finale was too easy (especially in comparison to the elevator event).

Conclusion:

This was harder than I expected, but in a good way. The only time I felt frustrated was probably the fifth time I died waiting for that elevator. Zombies up to my eyeballs! Apart from that, I loved certain details. Pretty good overall.

Pros:

-Nice environment.
-Some parts are nicely detailed.
-Supplies spread evenly throughout.
-Challenging, yet not frustrating.

Cons:

-Slight navigation problems, but nothing too major.
-Odd glitch with the elevator. Sometimes the bots go through the floor.
-Helicopter felt as if it was moving a tad slow. In one run by the time it landed, we all got overwhelmed.

Conclusion:

This was way better that I expected. I had a blast playing through and will replay this in the future.

Pros:

-Works fine.
-Looks cool.
-FPS arms.
-Maggots!

Cons:

-FPS hands look a little squashed.

Conclusion:

Yet another cool TF2 mod. Almost close to completing the set now!

Pros:

-Simple and straight forward.
-Plenty of rooms to check out.

Cons:

-Invisible desks.
 

Conclusion:

This was a lot better than I was expecting. All it needs is more detail and a fix for this invisible items then it'll be amazing.

Pros:

-Works fine.
-FPS arms.
-Hudda, hudda!

Cons:

-For some reason the shoulders stick upwards, but it's not major.

Conclusion:

Yet another addition to the TF2 character mods. Looking forward to medic!

Pros:

-Higher detail FPS arms from TF2.
-Animations work fine with the model.*
-Best of the TF2 character mods so far.
-Incap hud and player icon.

Cons:

-*There is one glitch that pops up now and then when he gets nabbed by a charger, but it is very minor and rare.

Conclusion:

What else can I say other than a great mod overall? It works so well with barley any glitches.

Pros:

-The way the bots should really react!
-Better than valve standard bots.
-They use melee!
-I am no longer left to die when I get ambushed by a special.
-They keep on playing even when I'm dead.

Cons:

-This may not work well with some custom maps (not creators fault though).
-They still have the odd derpy moment, but that is mainly the game's fault.

Conclusion:

This is the answer to everyone's single player woes. The cons are really things that can't be helped, so anyone reading this should still give this mod a go. 

Pros:

-Looks great.
-Works fine.
-Good FPS arms as always.

Cons:

-The thing with the feet.

Conclusion:

A fun mod that completes the TF2 team. Also goes well with the male scout mod.

Pros:

-Looks fine.
-Works fine.
-No major glitches.
-FPS arms.

Cons:

-There's this odd glitchy bit around his wrists in firstperson, but I'm guessing that is something that can't be helped nor fixed.

Conclusion:

Same thoughts as the others... awesome. You made me a very happy woman with these. Aha.

Pros:

-A TF2 skin! Whoo!
-Works fine, no visible glitches.
-FPS arms are great.
-Works in multiplayer.
-Also works with any other mods I have.

Cons:

-Very minor con here, no face posing, but I know how hard that can be to fix.

Conclusion:

I am one happy sheepy because of this mod. I had to make do with Mr.Lanky's scout mod (no complaints though, it is a fun mod despite no fps arms) until today. I can't wait until I have a whole team of TF2 characters running around. Thank you!

Pros:

-Great maps!
-Each map was short but sweet.
-I loved the little boat ride.
-Storms!
-Exceptional difficulty.
-Well thought out.

Cons:

-The helicopter had no pilot (Nick, did you shoot the pilot again?).

Conclusion:

I really enjoyed this campaign. Keeping it in my add-ons for good!

Pros:

-This was better than I expected!
-The plane part was pretty neat.
-Not many weapons at the start made it challenging, especially when we were met with the first tank.
-Wide open spaces. Not cramped like most maps.
-Decent path finding.

Cons:

-Details are a bit bland.
-Some graphical bugs here and there.
-Campaign felt pretty short.
-At the finale when rescue came, there were only a couple of tanks. No hordes in sight.

Conclusion:

I will admit when I saw the pictures of this campaign I didn't feel keen on the idea of trying it out. But you know what? I'm happy I gave it a shot. This was way better than I expected and I encourage others to at least try and play through the whole thing instead of giving up after one thing they didn't like. In conclusion, not the best map on here... but far from the worst.

Pros:

-Looks and feels like I'm in a pokemon game!
-Good atmosphere.
-Plenty of supplies everywhere.
-Tank time has never been so much fun!
-Easy to get around.
-No bugs!

Cons:

-There are no cons.

Conclusion:

I adore this map. By far my favourite survival map so far. I played this for three hours in a row yesterday. Time flies when you are killing tanks to the pokemon soundtrack!

Pros:

-Eye-catching yet not too bright.
-Excellent detail.
-Suits him just fine.

Cons:

-None I can see.

Conclusion:

A great skin that seems very in-character and looks great. Also, was surprised that there were no reviews on this. Hope you don't mind this one~

Pros:

-Detailing looks a lot better than the Valve ones!
-Particle effects look cool and also helps spotting an infected when they attack (especially when in darker maps).
-Just plain awesome.

Cons:

-I think the Jockey's clothing is a tad too bright. It does not go well with the darker skin.

Conclusion:

I've held off downloading special infected skins for a while because most either look out of place or just did not catch my interest. These are simple, fit well in the game and are amazing to just look at. Nice one.

Pros:

-Challenging.
-Good atmosphere.
-Interesting ideas.
-Plenty of crescendos. 

Cons:

-Some parts felt they don't connect well (a vast forest then suddenly a town?).
-Bots died when trying to climb the ladder in map 2 (luckily there was a hero closet nearby).
-Not enough supplies.
-Finale was kinda easy (even on harder settings).

Conclusion:

A pretty cool campaign. Map 1 had some minor performance issues and from map 2 onwards, the bots failed to do simple things like climb a ladder. But apart from the cons, this is a good map. Will be playing this more often.

Pros:

-Puzzles were cool, but...*
-I did like the finale.
-Good ideas.

Cons:

-*I did get tired of the puzzles by the second chapter.Too similar to each other.
-Did get boring at times.
-When playing with bots, they would sometimes just teleport to the safe room, leaving me to defend myself as I franticly try to finish each puzzle. I can't recall the amount of times a charger would come out of nowhere and pound me to death as they stood in the safe room and did nothing.

Conclusion:

A good idea, but could have been executed better with some puzzle changes. I would like to see a remake of this with better textures and harder puzzles. 

Pros:

-Hacking at zombies on stairs has never been so much fun!
-Nice design and layout.
-Difficulty felt balanced rather than chaotic compared to most maps, but...*
-Virgil for the win.

Cons:

-*The finale was fun, but the fight took place in very close quarters, allowing tanks to shove me into corners and pound me to death.
-Got a little confused when it came to finding the right path.

Conclusion:

A well balanced campaign which is a rare find for me. I had lots of fun as did the friend I brought along for the ride. To us it felt like an official map. 

Pros:

-Mario!
-Nice level design.
-Harder than it looks.
-Lots of fun!

Cons:

-Some jumps are a tad tricky.
-As usual, the bots are hopeless.
-Tanks and chargers can knock you off to your death too easily and too often (may frustrate some players).
-Sadly no Mario music or sounds.

Conclusion:

A really fun map to play with friends! Playing with bots will only lead to constant frustration of dying a lot.

Pros:

-Good ideas and many challenges.
-Well made, no major bugs!
-Unique finale.

Cons:

-Finale was a little tedious.

Conclusion:

Good map, unique ideas. Finale may be frustrating for some, but I managed to get there in the end and had fun.

Pros:

-Great setting.
-Other people.
-Infected skins.
-Challenging.
-Custom graffiti (the one where they took everything had me in stitches).

Cons:

-Finale was a little hard with the constant hordes.

Conclusion:

Hours of fun to be had in one of the best maps on this site~

Pros:

-Different paths.
-The boat.
-The prison.
-Music.
-Kinda easy, but still enjoyable.
-Rescue by balloon for the win.

Cons:

-Mild issues at the end when getting to the balloon.

Conclusion:

Overall a nice map to play even if is is a tad easy. Was strangely relaxing, aha.

Pros:

-One of my favourite films of all time a map? Hell yes.
-Lots of fun details and "easter eggs" to find.
-Challenging on all difficulty settings. Even easy mode was tricky in spots.
-Instructions were easy to follow except one (see cons).
-Police and store owner warnings.
-Voice acting.
-Very fun map.

Cons:

-The instructions about the forklift were not very clear. I started it but all I had to was climb onto the stack of boxes then up the ladders to the vent. I spent ages fighting the endless hordes until by chance I spotted where to go when I flashed my flash-light. 
-Way too many hordes on map 4. After going through the vent I thought there would be some sort of break even it was short. Endless hordes kept coming until I got to the safe room (it took me two attempts to make it till the end).
-Slight confusion with the bus at the finale. I had no idea it was surrounded by barricades. Almost didn't spot it.
-Bots has their moments, but it is safe to say they are like this on every custom map.

Conclusion:

Despite one or two things, this map is amazing. True to the film it is based off and is worth replaying. This is up there with Suicide Blitz.

Pros:

-Starfox! Whoo!
-FPS arms.
-Works just fine.

Cons:

-None here.

Conclusion:

What more can I say other than another cool skin?

Pros:

-Great setting.
-Gorgeous detail in places.
-Easy to get around.
-Played just fine.
-Liked the opening and ending cutscenes. Pretty sweet.

Cons:

-Lacked a finale.
-Sometimes when a special spawned, their theme didn't play.
-Bots had a bit of trouble with the ledges in map one.

Conclusion:

This is a stunning map to look at. I know some people would think it looks too clean for a zombie apocalypse, but I think this map is an exception. Apart from one or two nitpicky things, this map is fun and perfect for those days where you just want a casual game and not panicky mess.

Pros:

-Detailed map, looks good.
-Custom skins.

Cons:

-Way too much bloom.
-Major performance issues.

Conclusion:

This is a great campaign from what I've seen so far. I say that because I had to quit by the third map. The performance issues got worse for me as I went on. I look forward to playing this map again once the performance issues have been fixed. This map has so much potential.

Pros:

-Decent sized maps.
-Nice details.
-Challenging without it becoming frustrating.
-Plenty of replay value.
-L4D survivors at the finale!

Cons:

-Finale was a little dull (another gas can run).

Conclusion:

This is a fun map with good amount of detail. Challenges seem balanced too. Will be playing this for a good while!

Pros:

-Large map.
-Stunning detail.
-Fun!

Cons:

-Bots have the odd derpy moment, but nothing game breaking.

Conclusion:

Best survival map I've played!

Pros:

-No mercy with L4D2 survivors!
-Tweaks are good.

Cons:

-None here.

Conclusion:

No Mercy is one of my favourite campaigns for L4D, so this ticks all the right boxes for me.

Pros:

-Decent size maps with lots of content.
-Fun and challenging.
-Voice acting.
-Plenty of item dumps.
-I loved the lift to the military base.
-Good finale.
-Cutscenes! 
-Daylight maps!
-No bugs (for me anyway).

Cons:

-Not a single one.

Conclusion:

For me, this is one of the best maps I've played to date. Plenty to keep players busy and will want to replay plenty of times. Good work on this!

Pros:

-Not too hard, not too easy.
-Nice environment.
-Easy to get around.

Cons:

-Finale is a little dull. Yet another gas can run.
-Sometimes hordes do not spawn.

Conclusion:

This is a decent map. The odd glitch happens now and then, but for me it is not game breaking. I use custom skins anyway so i have nothing to say on the skins that come with this map.

Pros:

-Fun new weapons.
-Great map.
-Directions are clear.
-Fun and not too hard.
-Great music.
-Great voice acting.
-That cutscene was worth it.

Cons:

-Finale battle felt a tad cramped (minor nitpick).

Conclusion:

I will be replaying this map for a long time. Worth the download.

Pros:

-Beautiful detail (from what I could see because it was dark, haha).
-Challenging.
-Interesting twists and turns.
-Good finale.

Cons:

-Maybe a little too dark in places (for me anyway).
-Too easy to get lost (close to being frustrating, but not enough to spoil my fun).
-Bots (and one time myself) got stuck in some spots.

Conclusion:

An amazing map that is very challenging and has replay appeal. May be too much for people new to the game.

Pros:

-All the models work fine.
-No glitches.
-Amazing fps view for all.

Cons:

-I honestly can't fault this.

Conclusion:

I've downloaded this and the separate skins (some days I like to mix and match mods) and they all work fine. Fan or not, I reccomend this to anybody!

Pros:

-Crash kicking zombie ass? Yes please!
-Works perfectly.
-Good fps arms.
-No glitches.

Cons:

-From a certain angle the model looks stretched, but this is a very minor nitpick if anything. 

Conclusion:

A fun mod that gets me all nostalgic! This goes well with the Crash Course map.

Pros:

-Fun skin.
-Works fine.

Cons:

-Eyes are blank or pink sometimes.
-Medkit and items "float" around him. They don't look attached.
-Paws in fps view take up too much of the screen (but I don't think that can be helped.)

Conclusion:

A fun looking mod. One or two nitpicks here and there, but still good.

Pros:

-Works fine.
-Looks nice.
-Oddly enough, it suits Bill.
-No visible glitches.

Cons:

-No fps arms. That would make this perfect.

Conclusion:

Overall, a very nice skin.

Pros:

-Deadpool. Just... Deadpool.
-Great fps arms.
-No visible glitches.
-Nicks sarcastic responses go so well with this mod.

Cons:

-Nothing. This is perfect.

Conclusion:

One of the best skins I've used for Nick so far.

Pros:

-A very good likeness of the digimon it is based of.
-Good fps arms.
-Extremely fun to use.

Cons:

-Eyes don't move, so she looks a little creepy (but this is a very minor con, so don't sweat it).
-Fur texture looks a little odd.

Conclusion:

This is one of my favourite skins for Zoey and Rochelle to date. Would be interesting to see other digimon as a skin in future.

Pros:

-Amazing fps arms.
-Works just fine.
-Looks amazing.
-Coach finally got a cool skin. <3

Cons:

-A very minor bug with one of his legs when crouching, but  barley notice it most of the time.

Conclusion:

Best Hunter skin around. I reccomend that all Hunter fans give this a download.

Pros:

-Looks great.
-They hold the weapons perfectly.
-No bugs at all (from what I can see)

Cons:

-Mouths don't open when speaking (more of a suggestion if anything).

Conclusion:

My favourite group mod to date. Real quality stuff here.