Pros:

Great details, both visual and audio
Nice twists to the routes
Fresh twist to the finale tasks
Fun to play, with all those rides and everything that's going on all around! :D

Cons:

Maybe could add a bit more infected, but that's just a minor thing

Conclusion:

Overall nicely done campaign with lots of details and enough challenge. My clan likes when the maps are not just "running on rails", so that you must explore a bit and maybe return to where you left to find the right path. That was pretty much the case in this campaign.

Would recommend for everyone, good job!