Pros:

beautiful levels, really well done scenaries
good amounth of hordes and special infecteds on each level
the aquatic park level was magnificent the radio transmition was great
thunder effects on last map was a nice detail
no tanks on last level so you can work on calm with gas cans 

Cons:

map 3 still crash sometimes
bots navigation is not very good in map 3, in the others maps i think was ok.
no laser sights anywhere (i love those) and not too much good guns like assault rifles
last map was too much complicate with bots, the distance of gas cans and boat was too big, huge fail

Conclusion:

it is a beautiful campaign, some bugs and details and cons, but it is really well done campaign. It needs an update for those little issues but nothing serious. Well done!