Pros:

Maps look great, good use of soundscapes and other atmospheric effects like wind affecting the power lines, leaves and other debris blowing away, good lighting, good tank trap in map 2, finale was interesting with the different building stories

Cons:

Only negative IMO is the infinite gauntlet at the end of the first map is a lot more difficult than anything else in the campaign which is kinda weird from a pacing standpoint. On expert you basically have to save 2+ pipes.

Conclusion:

One of the better campaigns to come out recently.