Pros:

-It's a space map!

Cons:

Weird placement of objects, why is there trucks in space?

UFO is very under-detailed

Lots of other annoyances

Conclusion:

I like the space competition, however I don't think this map is up to par with contact or zombies from planet x. 

Pros:

It's a zombies of the Caribbean ride!

flavorful use of zombies, Does remind me of the kiddy ride a lot

Cons:

Bad optimization

Methinks the reviews are skewed

kinda boring

little/no gameplay

Reminded me a lot of hl1

under-detailed, and very blocky

kitch-only factor

Conclusion:

I'm going to just say it: There's no way this map is a 90% map. I will be the first to say it and probably receive flames for it. I see it all the time on this site, and if you don't believe me download the map, and download death-aboard or something.

Granted, I thought it was a neat idea. It was inventive of the use of zombies, and how you could ride the map, however other than nostalgia value the map was very bleh. Honestly the only reason it's a 68 in my book is because it is kitchy. It was underdetailed in a bad way with no new props, and the brushwork was very blocky.  Basic four wall box rooms with more box rooms in-between. There were no random item placements, and the map was very easy. There was basically no ending, and it seemed to be thrown in. I saw little/no difference between playing with zombies and playing without, however I will admit it was fun to play the map twice and see what was behind everything. 

There are so many ways to add to this. Outside of detail, why don't you make the survivors scream or something when they go down the slide parts of the ride? I know it's possible, because I think ryok got the survivors to scream in freezer burn at one part. or at least talk

Pros:

Neat single map, finally got around to playing it. one of the first custom maps if I recall

Cons:

you've gotta fix that tank spawn issue...

Conclusion:

Pretty good for a single map. The 2 map issue thing could be easily addressed in another way. Right now it seems kinda hacked. ever think about porting this to l4d2?

Pros:

Over the top graphics quality
lots of little cool-features put into the maps
great music

Cons:

none? only a single map?

Conclusion:

This is without a doubt the best map on the site, and far better than the other maps made by him. Reviews lower than 90% obviously don't realize this is a scavenge/survival map, which just happens to have a coop/versus map tacked on for extra gameplay enjoyment. I mean the coop map is basically a redux of scavenge by having you grab chompski and throwing it into the field.

Pros:

Winter themed map

big area

Cons:

doesn't work properly

doesn't feel very cold

single map

Conclusion:

I'm not a big fan of single maps. There seems to be too many of them out there. There are also many places where you can exploit.

Pros:

Custom skins, textures, voice acting
\
funny dialogue between the survivors and pilot

great ingame music. Is that the elevator music from newgrounds?

Cons:

none. I dunno, boxy rooms?

Conclusion:

I generally don't care about reviewing, but I just had to when I saw some of the negative reviews, especially when someone gave it a 50 because they said it had a stolen skin. People, actually DOWNLOAD the other skin, and this campaign. They look nothing like one-another! It is a crime that people force me to write a review about a campaign just because they can't judge it fairly.

I've also noticed another complaint is the bots not taking the medkits. Am I the only one who knows that l4d2 has a bug where bots don't pick up medkits if they heal with the first one in the safe room? This is a bug in l4d2, and giving this campaign a bad ranking because of it.

Honestly, I would give this campaign a 90, because even though it has some great features, (the change between fire and ice is awesome), it has a lot of bugs. However, I have to give it 100 just to counterbalance some of these fail reviews that are posted. 

I almost forgot: If he was to package the tank skin separately, wouldn't it be the same issue? You would still have to turn off the tank skin. Seriously, is it that difficult to open up the add-ons tab and uncheck the campaign when you want to play something else?