Great release! I've played all the regular maps and saved the secret map for another day.
It's really cool to see a quality episode with every map being based on a real location in the same city.
I have to echo what most people said: the episode starts out pretty good, but it gets really good once you reach level 5.
Some areas lacked in lightning, especially in the first few maps. You can clearly see how you progressed as a mapper.
Personal highlights:
- the sheer size of level 5. I know this isn't everyones cup of tea, but I enjoyed every minute of this level.
A huge hub area, almost every building can be explored, and blowing up tons of baddies and see gibs flying everywhere never gets old.

It reminded me a bit of ck3d's levels.
-The outdoor location of level 6. Holy shit, good job on that one. Also liked the intense rooftop sequence in this level.
-The last 2 levels are standouts design-wise, the water plant was very well made and you also did a great job recreating the train station.
-A lot of ammo for the explosive weapons so you can use them on the regular enemies without worrying about conserving ammo.
Only thing I didn't like was that huge wave of enemies at the end of level 8. It felt out of place to have a Serious Sam styled massacre.
It also caused a bug with the water which made it nearly impossible to finish.
PS: but if you enjoy that type of gameplay, you should try Battlefield 3 by Sangluss.