Pros:

-It's Harley Quinn!
-No issues with animations
-No parts look messed up

Cons:

-No name or icon replaces
-No facial animations
-No first person arms

Conclusion:

Over all I really enjoy this mod, but really only when I'm not playing as Rochelle. If FP arms were added, I would definitely bring this up to a 9.5.

Pros:

•Replaces my least favorite L4D2 character with my favorite L4D1 character!
•Soundpack
•Facial animations

Cons:

•Doesn't work with mods that change Zoey's model.
•Campaigns that have scripted Coach dialogue still play Coach's voice
•Does not reference other characters

Conclusion:

Overall, this is a lovely mod. I love having two females on the team! As for the cons, it is a bit disappointing that you can only have normal or reskinned Zoey, no model changes. It's minor, since I do really like Zoey's normal design. Also something minor, but Coach's voice still plays if he has scripted lines in Campaigns. And something very minor is that she doesn't say the other characters names, but that would likely require a lot more work, and it doesn't bother me that much! Very well done and thank you for this!

Pros:

•Had the mood and design of the Titanic
•Large levels
•Mazes!

Cons:

•Kind of repetitive. I can overlook it in the early levels (lower deck), but in first class, all the rooms look the same, which is disappointing
•The finale was confusing. I didn't realize I had to start it then run almost back to the saferoom to escape.

Conclusion:

Overall it's a decent map that captures the essence of the ship, but for a campaign it needs some improvement.

Pros:

Nice model.
Love the new sound.
Nice animations.

Cons:

None.

Conclusion:

This is, by far, the best pump shotgun replacement I have found. It's really awesome, and I love the sound of it firing. It really makes me reluctant to drop this gun for tier 2 weapons!

Pros:

Nice quality
Neat animations

Cons:

No custom sound

Conclusion:

I love the skin and animation for this. It looks lovely. I can't bring the rating up to a 10 though, because of the lack of new sound. I find the current Uzi sounds just don't match this model. All in all though, it's a wonderful new gun!

Pros:

Creepy.
Fits in with the game.

Cons:

Attacks.
Ladders.
Voice/screams.

Conclusion:

This skin actually makes the witch creepy again. The old one was getting a little dull after seeing her so many times. This one looks great and fits with the game, something that is a bit of a rarity among infected mods. However, her attacks look a little weird, mostly when she first knocks you down, because it looks like survivors just fell over. Her ground attack looks a little better. Also, I don't think the default witch screams are as good with this skin. Still, minor flaws that are overshadowed by the skin.

Pros:

Unique.
Fun to play.
Interesting finales.
Usage of gas cans is neat.
Can be challenging.

Cons:

Bot navigation in some areas.

Conclusion:

To start off, I love this campaign. It's probably my favorite right now. It's challenging enough without being impossible. The gas cans to unlock weapons/items is really neat, and makes you save gas cans you find, instead of hooting them to kill a couple zombies. The finales are probably my favorite parts, especially the falling cars and breakaway bridges. It's fun and makes you think, instead of just running.
My only con is bot navigation in certain areas. Unlike other reviews, I find this campaign to be easier in single player. Bots aren't horrible and they pick up most items. The only problem is that they rarely go into the small bathrooms, which usually contain health kits and pills/adrenaline. It's a little frustrating have to leave a health kit behind, but whatever.

Pros:

More suited to Zoey.
Moving Hair!

Cons:

None

Conclusion:

I haven't had any problems relating to this skin, and I love it. It's more suitable to teenangst than the original Zoey. Plus, I love her stockings!

Pros:

Good attention to detail.
Interesting puzzles.
RE: Outbreak.
Confusing puzzles*
Hunter Licker

Cons:

Writing on the walls.
Ads.
Confusing puzzles*
Bot Navigation.
Ladders.
Items.

Conclusion:

Being a fan of Resident Evil Outbreak, I love this map. It's pretty much as close as you could ever get in L4D. Aside from a few places where the rooms have different sizes (second floor landing in Outbreak. The actual game had an open space, this map had a small hallway) it's very close to the source. I like the music replacement for the witch, as well as the skin replacement for the licker. I just wish that the other infected had skin replacements. They don't fit in as well. The puzzles are quite confusing, especially if you have never played Outbreak before. While I am in favor of this, half the time I played, I played alone, as people got fed up with it and left.
The writing on the walls was very excessive and bothered me, especially in Hellfire and Decisions Decisions. As another review mentioned, less is sometimes more. An entire corridor filled with the same thing scribbled again and again ruined the atmosphere for me. As well, the ad placement was odd. 
There were far too many healthkits and weapons placed around. The first gun you get is an auto shotgun... I would have preferred a tier 1 shotgun instead. And there are 14-15 health kits per map. It's quite excessive, especially since the infected don't have high spawn rates.
Final note: ladders. There are a lot of ladders in the campaign, and myself and friends constantly incapped/killed ourselves on them.

Overall, if you are a fan of RE:O, and like a campaign that is filled with puzzles and can take a while to beat, I highly recommend downloading this one. For everyone else, give it a try, but don't expect it to be amazing.