Pros:

Very challenging for advanced players which is fun; we play couch-coop a lot… Maps are diverse and less “glitchy” than most… looks good and good content.

Cons:

The Finale is ridiculous to the point of frustration beyond anything fun… Hoards are absolutely non-stop from the beginning together with a mix of up to four (4) simultaneous Tanks…  The rescue is audible (loud) but never appears or manifests for boarding. There is no time to explore the map for options due to the relentless Hoards, the rescuer speaks of a mounted gun, but we have never found it. We have finished about 150 L4D(2) campaigns but not this one.

Conclusion:

Very fun to a point... unless you like to complete a campaign.