I personally quite liked this campaign, it is surprisingly well done for your first, I would only say that I hated those claustrophobic sewers and the pitch black rooms where I couldnt see anything.

The finale exploding barrels were an annoying addition to otherwise a decent chapter, and we broke map 1 once by having a special land on the car when it was leaving.

Heres the speedrun: https://www.youtube.com/watch?v=kGRwqmpcKcE

Heres the special infected breaking the escape vehicle: https://www.youtube.com/watch?v=ev-sFVXkC78