Pros:

-Extremely detailed
-Foreign concept
-Original (From Above)
-Well placed supplies
-Long but fun finale
-Retextured half life 2 npcs in church
-Minecraft Secret
-Custom textures for melee, hambone and propane
-A lot of custom textures/models for other things
-Hugely realistic
-Uncommon zombies
-Ceda personnel in chopper at end
-Tons of supplies at end before Siesta start
-Good campaign poster
-Cool skins you get for finding easteregg
-Interiors and exteriors
-Really good nav
-Balanced gameplay, different areas, not too hard but not too easy, fits difficulties just right
-Each map is differently laid out and designed/fashioned and keeps you coming back for more!

Cons:

-Some places felt a bit underdetailed
-Small lag in some places
-Swan boat in sewer

Conclusion:

Very, very good campaign, could use some Scavenge and Survival maps, also a tad more detail in some locations, and the Swan boat doesn't make sense, but other than that, absolutely LOVED it, and anyone who comes across this campaign, this is a MUST DOWNLOAD. Go on, do it.