Pros:

1) ....  Amazing visuals
2) .... Best map  ever for unusual design
3) .... Excellent atmosphere
4) .... Original Idea

Cons:

1) .... Nothing bad about this map

Conclusion:

I was amazed  when I finally played this map.  to be honest I'd totally forgotten about it  after downloading   30 or so maps  around the time this was released.  It was   stored in my back up folder and forgotten.  I happened to stumbe across the  file  today and  decided to play it and was very impressed with the level.  In fact I'd go as far as to say this  has been the  most beautiful level i've ever played in both of the L4D games.  Well done to the  developer, you've got some talent.  

I would love to see ths   extended to a full campaign, even if it was just   another map or   two.  You could create  one level in  underground caverns and maybe create an alien city for the   final map, with a rescue   via a space ship.  :)  

I'm going t score this   super high because I think it deserves it.  I'm going to search to see if you've created any more maps.  I hope so.  Don't let   the  score of 55   put you off.  to be honest the scoring system is flawed when only a few  score as it's too biased.  You need   many  votes to make  the  score meaningful.  

Pros:

Excellent scenarios
Hard, but not     so as to make it impossible to beat
Great for the average player
Enough supplies to keep you from   dryig up
Well balanced   finale
Improvement on the original release

Cons:

Maybe a little too long

Conclusion:

I love this map.  It was the first  custom made map I ever played   when  I used to play Left 4 Dead, so it's sort of   got sentimental value. I was very pleased to see it ported over to L4D2.  I've played  it   several times with friends and have never grown tired of it, unlike many  other L4D2 maps (no names mentioned though, lol).  I do think   overall it's a little too long, but I don't mind that so long as   the friends I play with are able to come online early ( theres   several  hours seperating us on both sides of the  meridian, so some are playing it in the morning, some   late afternoon and me after midnight).  It's d efinitely one of my favorites together with I Hate Mountains 2, Warcelona, Suicide Blitz 2, Tour of Terror,  and DeathAaboard 2, plus several others, all of which I prefer to the vanilla maps. 

Pros:

1)...Some nice additions to the vanilla map

2)...Excellent finale

3)...Environmental changes  make the   map look different from the  original.

Cons:

1)...Need to add a fence  next to the precipice; I'm always  falling off.

2) Collision Mesh needs  sorting in the railway station.  There's a point where you have to climb up onto boxes to get onto the  platform shelter roof.

Conclusion:

I love playing this map.  It's   a great one if you've not got a lot of time as you can  complete it in less than half an hour. I'm really surprised that it's not got  enough votes yet as it's been out  for well over  ayear.  There are enough  small changes   such as  placement of objects, the   finale and  it being set at dusk instead of daylight to make it look totally different from the  vanilla version, plus of course you're going in reverse.

Pros:

•	 Fantastic and original   5 level campaign

•	Each level has something different and often amazing  to offer

•	Smooth transition between  all levels

•	Brilliant  dark and foreboding atmosphere throughout the campaign

•	Attention to detail in all levels is amazing, I particularly loved the  Mansion - the best   building  I’ve ever seen in this game.

•	There's an open world feel to the   campaign, with loads of alternative pathways to  the safe houses

Cons:

•	Nothing come to mind apart from the end of the second  'mansion' level where you could get stuck on some of the helicopter debris; (I don’t know whether this has been fixed in the update yet)  :)

Conclusion:

This is one of my favourite L4D maps; in fact it's   my number one favourite.  I'm really looking forwards to seeing a L4D2 port. It has loads of different and original scenarios that really amazed me when I first played this campaign.  The mansion level is amongst my favourites as is the third level with the last level a close third.  The campaign is brilliantly done and IMO (ob) well worth   the high score I've given it.  There's   hardly any other map to touch it for game play and atmosphere.  :)  I hope the two guys who created this are working on another blockbuster.  
p.s. To the modders - a brief idea for a campaign:
 Create an alpine  map with  ski resort, Alpine forest, Research station  on a glacier or ice field (on the lines of Ice Station Zebra, a satellite  station on top of   a mountain, with cable car to take you between  a  couple of the levels. (Cable car takes you to the next safe house which would be a cable car station)   Wonder if you can code in  some ski’s or  snowboards, lol; if that was possible the  last level could end with  the survivors skiing down the mountain to a helicopter rescue, with  zombies attacking you on the way down the mountain.  You could call it ‘I Love Mountains’, lol.