Pros:

Cool abilites
Creative buildings
You can buy survivors from left 4 dead 1

Cons:

Turrets attack survivors
Bots sometimes get stuck

Conclusion:

Its fun to play, fun to build, fun to kill.

Pros:

Mutations

Cons:

None

Conclusion:

Great mod everething is working, a lots of mutations. And of course it is funner to play with your friends.

Pros:

Good textures
No glithces
Cool sounds

Cons:

None

Conclusion:

Very good replacement , i havent found any problems with it.

Pros:

Good textures
i always want to kill zombie by Pipewrench

Cons:

None

Conclusion:

Very well i enjoyed it.Pipewrench its awesome.

Pros:

Good skin
This costume suit to Nick
Mafia Nick!

Cons:

None

Conclusion:

Very good skin i reccomend download it.Also mafia style suits to Nick.

Pros:

Zoey looks Great
I dont have any problems with this skin

Cons:

None

Conclusion:

I love this skin very much i recommend you to download it

Pros:

She looks very good
No glitch with weapons

Cons:

none

Conclusion:

I love portal 2 very much and i have enjoyed this mod.

Pros:

Good idea
Cool bunker
fun to play with friends
Good-looking textures

Cons:

Its small

Conclusion:

I enjoyed this map also i like how round start.

Pros:

Good research map
You can buy guns,build objects
Very fun

Cons:

Stupid bots

Conclusion:

Great research map i hope you will enjoy it.

Pros:

Very big map
A lot of details
Movie
Two versions of map

Cons:

Bots sometimes fall from rooftop

Conclusion:

It worth to play

Pros:

Portal style
lots of items
selection difficult
traps
slowmotion

Cons:

Bots sometimes stuck in the doors

Conclusion:

Very good map which i enjoi to play

Pros:

You can build all what you want
You research items

Cons:

Stupid bots 

Conclusion:

I love research map very much and this is my favourite research map.

Pros:

Gendalf!
Castle!
Epic music!
Epic map!

Cons:

sometimes npc spawn in stupid places

Conclusion:

This is my favourite map for left 4 dead 2