Recycled Addiction
Players like me who didn't play the prequel, will love this game (if you are into zombies).
I find the game to be lots of fun, so much dismemberment... although some times it fills a bit overreacted.
Still this game has a feeling of fresh... even if you get bored, it automaticaly makes you to "want to play", unless you always play in singleplayer or with "idiots"(guys you ask for help and they leave you to die in a middle of a match).
If you got friends that play this game, you will enjoy it alot!
Graphics (8.5) - Seen them, look pretty, not so pretty in dark scenes, you can see a big evolution since "Counter-Strike Source", still pretty.
Gameplay (9.5) - Not a big fan of "Old-school style" but gotta say, this is a very good gameplay, cooperation of other players is a MUST, to enjoy this properly.
Sound (9) - Who doesn't like thoose zombie sounds? also the Jockey's and Charger's sounds are the best (my opinion), with out talking about the Witch's.
Lenght (8.5) - It's fun, it lasts, but it feels recycled and always the same at a certain point, but you will still play it.
Originality (8) - Weakest point in my opinion, this is a good game that doesn't feel "fresh" even if it is your first time playing it, also it lacks of fire weapons (always the same, they don't seem different from each other). Also it lacks of "horror" (too much comedy, not so much horror)
So there you go, Left 4 Dead 2 is a good game, expecially with friends, if you are not into zombies, than this won't change much your idea.