Pros:

Interesting envirments
Felt like a journey
Long campaign
New game mode ending :)
Awesome effects and events
Very orgininal campaign
Intro at the beginning
The blood fountain was a very cool touch :D
Custom Tank models were entertaining

Cons:

I crashed serveral times (4 Times) due to mod conflicts like witch models 
A horde seemed to be constantly appearing randomly when no event was triggered but since your going to fix this no points taken
Lag during the last level

Conclusion:

This is one of the best campaigns I've seen. The play through experiance was a bit frustrating at times, but the overall affect was unique and fresh