Pros:

The map is interesting to play through a couple of times.
L4D1 Survivor usage
Well designed with no glitchy props 
Traps are pretty well made
Very challenging which I find entertaining 

Cons:

All the traps do most of the time is spawn hordes of zombies.
No proper finale 
Maybe furnish the interior a bit

Conclusion:

A good map. I enjoy trap maps, but may I recommend to be a bit more creative with the traps, check out the campaign Powerstation. Its an amazing campaign and my favorite aspect are the traps. And they are designed very well

Pros:

Love the weather effect - Sandstorm Its not to easy to see but not impossible.
A good variation of weapons scattered across the base.
Great NAV
Well placed items and no glitches occurring through the map
Good use of ambient sounds and lighting
Not the average boring survival map. Much better!

Cons:

As everyone else added, A LACK OF Melee weapons!
Typical Map/Base layout.

Conclusion:

A great map overall. I throughly enjoyed a different style of weather. Though improvements can always be added. 
However, congrats on a great map

Pros:

L4D1 Map 
Deffinatly not a cheap map convertion
Hard work put into it, I love the custom routes, makes you think more and the gameplay longer.
I actually kinda like the dark atmosphere in map 3... but thats just me and most peopel prefer lsightly brighter.
Awsome weather effects and I LOVE the lightning.
This campaign actualy makes l4d feel scary.
Little bugs and no purple black sqaures/error signs

Cons:

I feel like theres little infected on 1st map and the last.
i crashed on map 3 alot of times and i found it confusing at the start on what you had to do.
Maybe add a tad more arrow signs.
yeah and like engineer said... 2 tanks... to hard...

Conclusion:

AWSOME EPIC WIN MAP.... would be great if you could fix these minor problems, and I really hope you change some of the other campaigns of l4d1 aswell.

Pros:

A working train that moves.
Very entertaining
Has some potentional to be quite good if editited more.
Misty atmosphere
Residident evil is an awsome game and this is a good map remake.

Cons:

The trees are just to much 2d.
I sometimes saw error signs and a purple and black train driver near the finale.(yes i do have addon support)
Very short
Very easy... managed to complete it on expert with bots
Needs more stuff to it to make it even more entertaining.

Conclusion:

This map still needs to have many fixtures and maybe make it into campaign?

Pros:

Awesome map... was the best in l4d1... and currently still the best in l4d2.
I personally like the bright atmosphere... it feels more l4d2' were as a dark atmosphere fits l4d1 more.
I always love the hard finale
Very fun to play with friends

Cons:

Bots are terrible followers time to time
Bots get stuck in stairs
The ship map can be a bit glitchy
yeah custom sounds dont really want to work - but as iv heard its valves problem.
And this map feels a tad laggier then the original

Conclusion:

all in all the map is great and hoping to see further updates added to it.

Pros:

A very nice remake of the cod 4 map.
Good places to camp
Fun to play and use mods on
And in general it looks well made with no bugs i can find.

Cons:

The floor on the ship looks to shiny and bright unlike in cod 4.

-Maybe would it be possible to add some weather effects if u port it to l4d2 like in hard rain?

Conclusion:

Great map to play... this map is better then ur typical survival map.

Pros:

Awesome campaign worth alot more downloads
nice atmosphere and hordes
very original!
the map layout is outstanding

Cons:

nothing much... can be annoying to find a good place to camp. and i agree with andyskate... saferoom guy didnt make much sense to me either.

Conclusion:

keep up the good work

Pros:

A port of doom... and we all love doom
I like the barrels
Key cards... also good feature.
I like the poster for the map
And i like the doom graphics

Cons:

Yeah barely and special infected
much to short... but it is a doom map :D... so i hope to c a campaign.
bots r stupid
the finale is kinda lame

Conclusion:

this should be made into campaign !!!... (btw its me elektra if u remember from utube :D)

Pros:

This map was just awesome
I love all the custom content
Many good spawn points for infected and i liked when there was 2 tanks or many witches.
Some maps looked really close like the game did, for example the second 1 in the campaign.

Cons:

Nothing really

Conclusion:

AWSOME!!!