Pros:

-Epic intro
-Awsome level design
-Very long
-Awsome detail
-Epic finale
-Very hard
-Versus

Cons:

-Finale is realy bad for versus :(

Conclusion:

My favourite campaing for Left 4 Dead 2. Awsome!

This time VALVe didn't faild in chosing a campaign! :)

Pros:

-Cool ideas
-Nice level design
-Awsome textures and models
-Very cool gameplay
-Nice low gravity stuff
-Good fps

Cons:

-No Mario music and sounds :(
-Bots fail alot
-Too short

Conclusion:

It's definitly a campaign that is worth a play. But it could be more awsome!
Very good job. But i recommend to read Cons from people and upgrade it :)