Pros:

Fun to play
 Good pacing
Good mapping
Intense Finale

Cons:

None since last update

Conclusion:

Me and my team had good zombie killing fun with this campaign

worth a download and play

Pros:

Nice Mapping
attention to detail
Custom Vehicles
Music
Overall very well done

Cons:

First level is too clean and bright

Conclusion:

This is a very FUN Campaign  nice placement of ammo and weapons 

First level needs a more "Billions FLEE City" kind of feel maybe some fires, trash, bodies or haziness/fog and it would be perfect.

Pros:

Lots of Fun
Traps
Constant improvements
Better China feel
Play as Either set of Survivors (first time I have see this)

Cons:

End Stats is the only one I can think of

Conclusion:

This is a fun campaign I have been playing since first release
definitely worth a download and play 

Pros:

Fun
Well Made
Different Environments
Chinese Med-kits
New Chopper
Good Pacing   

Cons:

Since the latest update I couldn't find any

Conclusion:

This is a very fun well made campaign as far as I can tell the Author has worked out all the bugs that I saw in earlier releases.

This will stay in our campaign rotation

Worth a Download and Play 

Pros:

Fun and Original
Awesome Programing
New Weapons
New Powers
This is a freaking Awesome Survival PACK

Cons:

Some things Difficult to figure out "Auto Ninja" Killed me the first time I used Very cool item though

Taking damage during tutorial bits

Conclusion:

Fun and Original
Awesome Programing
New Weapons
New Powers
This is a freaking Awesome Survival PACK

Pros:

Awesome creative fun new fresh
well made lots of action and humor best I've player so far

Cons:

none

Conclusion:

Play with as many friends as you can long but fun multiple paths through each map. Full of fun funny and freaky stuff plenty of action like I said best addon campaign I've played so far and I've played them all L4D and L4D2

Pros:

Different Fun and Challenging Campaign I recommend trying it on easy your first time through, but in definitely took time and thought to put together. I have been telling others about it.

Cons:

None that I can think of. 
Maybe more blood and bodies what's a Zombie Apocalypse without some gore. 
Version 1.1 fewer Zombies less fun

Conclusion:

Well done and good fun, splash some blood and body parts and I would give it 100

This review is of Version: 1.0 (complete) Size: 83.33MB File: questionableethics.vpk

Version 1.1 fewer Zombies = less fun went from a 99 to a 75