Pros:

-Randomized traps and puzzles.
-Forces bots to enter elevators, tunnels, etc. expediting the process to making it through the puzzles.
-Excellent gameplay.
-EPIC finale.

Cons:

None.

Conclusion:

So many times during this campaign I was blown away by the insanity. There are a lot of "what the crap just happened?", and "ooooo, what is that?" moments. It's not the sort of campaign where you just run and shoot, you have to think if you want to survive, but the director doesn't let you sit still for long. Playing with others is definitely a must, you could probably do it all by yourself, but it would make it much more difficult. It somewhat reminds me of the "Powerstation" campaign. Thanks to the randimization of most everything in each map, I'm sure my friends and I will be playing this a lot.

All in all verdict: EPIC CAMPAIGN IS EEEEEEEEPIIIIIIIIIIIIIIC.