Pros:

Lots of fun.

Custom content was great. 
(music/sounds/models/textures)

Didn't notice any bugs.

Cons:

Too short!

Conclusion:

Download this map right now.

Pros:

Really fun map.
Looks great, plays great.
Lots of really creative aspects.
Long campaign. (6 maps)

Cons:

The fridges don't open.
No scavenge/survival modes.

Conclusion:

I recommend this map to everyone.

I want to play it on a full versus game!

Pros:

Nice visuals. (Lighting, etc)

Nice brushwork.

Solid gameplay.

Very unique environment. (First snow map I've played in Left 4 Dead)

Challenging for the most part.

Cons:

Needs player clipping.

Tank knocked me on the tall roof and I was invincible for 8 minutes.

Scavenge border brush activating survival mode is a little strange. Would be better with a button.

Conclusion:

Looks Great. Plays Great.

I recommend downloading this map.