Pros:

- From Chapter 3 to 5 the detailes and variety of situations. 
- Good Chapter structure and you cannot lost yourself in diffrent locations.
- The Finale itself is the best chapter of all in Suicide Blitz.
- Solid horde attacks on parts of the maps.

Cons:

- Sometimes really stupid elite infected (hunter, smoker)
- The first and second chapter were not really detailed and not sometimes really short.

Conclusion:

Stable and Interesting chapters. Great polished and  very detailed chapters. Massive horde attacks at time. Suicide Blitz will keep your heart beating till the huge end of he Campaign.
This reminds me to give the score 98 of 100 for Suicide Blitz.
Great Job.