Pros:

Everything is ok ! Awsome campaign ! Atmosphere , the weather , the zoo . awsome ! 

Cons:

Everyhink is fine , i love the campaign ! The places , the dynamic weather, long and detailed campaign !

Conclusion:

I love it already , and i am happy there are still ppls who are working hard for us the players ! :) Thank you so much for the campaign , i bet it was hard work ! Long time was waithing for something like this ! Thank you once again and keep the good work pls ! 
10/10

Pros:

Nice begining !
I love this with the zombies shirts , Barcelona things !!!
The Bath in the begining its great idea ! 
The sky , the view of the city at the end !
 The stadium !!!
The cars , the bus`s !
The streets !
The L4D1 zombies !
The audio effects !
AND more !
And the wallpaper , AWSOME !

Cons:

Got few glitches but its not a big deal ! More servers for online games with friends !

Conclusion:

Congrats for the hard work ! This its in my favorites already ! :) And its the best campaign ever , EVER ! :) The details , the textures , the music , i like everything ! And Velve must give you a price for the work ! i can keep talking but , adcive for all : Play the campaign ! :) AWSOME WORK ! + The wallpaper awsome ! 
Very ORIGINAL , pls keep doin campaigns for us , PLS ! :) 
Barca rules !
Give you 100/100 ! 

Pros:

Very detailed !
Not the easy one !
Everything its good (my opinion) !

Cons:

Yep the Versus will be good like option !

Conclusion:

And i think too this map its one of the best ever ! 

Pros:

Very good idea and the maps are long !

Cons:

The maps are long , the models and textures are very good ! i love this campaign !

Conclusion:

Its one of my favorites ! Averything its ok and the finale its nice and not the easyest one ! Perfect job !

Pros:

I love the idea !
Greath details !
The colors ... , man perfect job !
Everything its awsome ! 

Cons:

The bots are dummies ! I mean rly stuped ! :D
No auto shotguns . But its not big deal ! I love the sniper too ! :)

Conclusion:

Need only few corrections but its not a big deal ! I love the idea and this its one of the best maps ever !
Keep the good work , ppls like you keep the game alive ! I got l4d2  but prefer to play l4d1 with campaigns like this !
ONE OF THE BEST CAMPAIGNS EVER !

Pros:

everything its ok 

Cons:

nice idea and Great JOB!

Conclusion:

Keep the good work man ! :) If you can import more maps from TF2 will be nice ! :) PERFECT JOB !

Pros:

Best campaign ever for this game ! I got it from last november whe was only the beta !

Cons:

Great job ! Nice details and.. Good job man !

Conclusion:

Dont know what will be The secriface but this one its a beast ! Propz !

Pros:

Perfect !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Cons:

good job !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Conclusion:

This is what i call work !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!