Pros:

Very cool flashlight

Cons:

Too dark in the middle

Conclusion:

Great design. If you don't mind losing some visibility in dark areas, it's worth a download.

Pros:

+ Survival elements are a nice change of pace
+ Being able to manipulate the infected spawns is creative
+ Bot commands are very useful for holding out positions
+ Absence of the player glow makes you feel like you are playing the beta version of L4D

Cons:

- Recoil is way too strong,; made me dizzy after extended play time
- Downloading the add-on overwrites custom vocalization commands
- Hardcore difficulty may not be for everyone

Conclusion:

Definitely worth checking out if you want a very different Left 4 Dead experience. My only big complaints are the overwritten vocalization and jarring recoil.

Pros:

+ Visuals are like nothing you've ever seen before
+ Great Soundtrack
+ Common sense and logic is non-existent
+ Finale has fan service

Cons:

-Needs a sequel

Conclusion:

10/10 because number reviews are for casuals and I don't need a number to justify how awesome this map is.

Pros:

+   Map has daylight sections
+/- Huge emphasis on survival horror
+   It is possible to beat the map

Cons:

-Ridiculously hard because of the map layout and confusing escape sequences(Played on Advanced with a friend and two AI teammates) 

-Aside from a couple of arrows on the walls, there is no clear sense of direction especially during the mad dashes to the saferooms and helicopter.

-Survival horror elements in the map are a hit-or-miss for a fast-paced game like L4D. Explosives and Tier 2 weapons are few and far between( on Advanced anyway.)

- Most times survival is based NOT on quick reaction time and teamwork but rather previous experience with the map (Dying repeatedly to become familiar with the special infected spawn and safehouse locations)

Conclusion:

It's a challenging map, not all for the right reasons though. It's beatable but you might find yourself more frustrated rather than satisfied by the end of it. 

Pros:

-Creative and Original
-Randomness of the map is entertaining
-Awesome escape vehicle
-Dumb teammate AI leads to comedic situations

Cons:

-Elevator prompts are a bit tricky to see
-AI teammates are reluctant to save you at some points

Conclusion:

10/10 because the number review system is dumb

Pros:

-Nice detail and fun to watch.
-Great sound

Cons:

-Sometimes doesn't work online

Conclusion:

Worth the download. It's just a shame Valve didn't complete the model on the other side of the gun.

Pros:

-Quick & Easy Install
-Nice Detail & Sound
-Adds humor every time you heal

Cons:

-none

Conclusion:

Very entertaining mod.