Pros:

-I love this fuucking map, its like valve's official campaign
-Map 3 is my fave part
-Still love this.
-Cool
-Awesome
-Not too easy, and Not too Difficult
-Slowmo's
-Explosions! Woo

Cons:

-I got lost on the part where you go inside the store thingy.(that's just me.)
-Some areas feel empty :(
-Finale is kinda boring in some cases.
-The Cave Part was pretty boring :p

Conclusion:

Perhaps if you would make a sequel of this where the helicopter crashed or something. or just like the hard rain campaign, survivors need to refuel the Helicopter to proceed you know. I have no problems with this map, fuucking amazing. keep it up! :D