I tested this out... I like the fact that you did a large urban area, that's always risky with FPSC, and you pulled it off pretty well. Here's some pros and cons;
+ The shaders look great, the "dog" running past the lights made my jaw drop
+The explosive barrel was a nice touch
+Limiting the ammo was good, it made the combat a lot more suspenseful.
+ The frame rate was steady
+The blood puffs looked great, a lot better than the standard FPSC gore.
- It wasn't very scary. I guess you were going for more of an action game though.
-Bugs; When I fell through the floor and died the third time I simply ragequit the game.
- A bit empty. For example the "shop" with health and ammo felt very artificial because it was so empty. A bit more attention to detail would be nice...
Overall, it was better than average, and it's always nice to see city areas in FPSC games.