Pros:

- Nice scenario
- Nice places
- Looks like Death Toll, Dark Carnival and Blood Harvest

Cons:

- Often lacks of direction (needs of opened doors and arrows to show the way)

Conclusion:

It is just worth a download. An awesome rural campaign with passages in town, and the finale is just one of the best ideas ever thought. It is hard but not impossible, the sky is beautiful at the end, they are several nice ideas... but the way to go is not obvious. Moreover, there are sometimes two possibilities to go to the same way, which could have been great if only the way was shown at the end. Anwyays one of the best campaigns ever.

Pros:

- Well designed, could have been made by Valve
- Nice ideas, for example some safehouses (I won't spoil, just play it to see what I mean :p)
- More fun than dramatic, must be better on L4D2 (can it be a pro...?)
- Short but hard alone, but a rush with friends can fulfill it in 25 minutes. Must be awesome on versus.

Cons:

- Some bugs on level 2 and 3 : the walls are (ugly) pink when we turn the lights off
- Sometimes lacks of direction, especially when we have to shoot the fence and when we have to call the chopper (spent quarter an hour to find that damn radio)

Conclusion:

A nice Valve-like campaign with several original ideas but also several cons. Fun for a versus, but since I have completed it alone with 3 bots on hard, I think it is too short for an online campaign with friends. Anyways, you can consider it as another Crash Course but at noon.

Pros:

- Long and creative campaign
- Well designed, good various ideas (for example a train that goes as a checkpoint to the last level), looks authentic
- Pure dramatic atmosphere of Left4Dead, better than most of Valve's maps
- I love the "saferoom door box" at the beginning ^^
- Nowhere to hide  at the finale, so no way to 'camp' in that big open stadium arena and cheat the infected (like most people do at Dead Air's finale)

Cons:

- Lacks of items (especially ammos and weapons)
- Too hard in expert (only because of the lack of items)
- Too long for a versus 
- Sometimes we don't know what to do or where to go

Conclusion:

A great challenge - exhaustive, because it is very long but fortunatly, various. It is better than some Valve's official maps, realistic and original, but some things have to get fixed : a little more indications to show the way to go and more ammos and weapons are needed. I think it's all.
To finish with, I just wanted to remind that this is a "city campaign". This is the only very con of "Suicide Blitz" originality, it always develops in an urban environment. But my last words will be : it's an awesome campaign, one of the best ever made, really worth a download (only 132mb for long game guaranteed !!).