Pros:

-Not a run and gun campaign
-Even more detail then a Valve map
-Fun
-Long
-Challenging

Cons:

-Not a run and gun campaign
-Can be dark at times
-Got lost sometimes (that could be my noobiness kicking in)

Conclusion:

Alright, so let me say this. BEST CUSTOM MAP EVER. This has so much detail its mind blowing! Now to state out my pros and cons. First, I realise I put "Not a run and gun campaign" and both Pros and Cons, and I did that for a reason. It's a pro cause from day 1 I wish Left 4 Dead was more of a zombie game resident evil style, rather then "K GUYZ WE GUNN SHOOT AND RUN 2 SAFE RUME". But it's a con because sadly Left 4 Dead is a run and gun game. It is fun, and there are a few puzzles. And it is long. I'm giving it a 8.

Pros:

Lego Textures ! :)
Includes riot shield
Good for lowend computers

Cons:

Might of been just me, but witches every 2 minutes.
Lot of model errors.
Too dark at some points.
Not enough ammo stashes.

Conclusion:

Very nice map. Enjoyed playing it. Some points were a little bit too easy, but most of the time it was just right. As stated in fmpfmp's review, it seems like it could have been a Left 4 Dead 1 campaign. But I did like the fact that it came with the riot shield, as I didn't have time to install it before. And players with a onboard/bad graphics card get decent fps on this map without it having ugly developer textures. Can't wait for the final release!