Just say hoho to low-raters and play game.
Gameplay 9/10
Gameplay is lots of fun.You can feel the pressure on survivors.Feeling the horror of get caught by a tank or a hunter, get chased by a witch or tank esc.And then you just don't kill'n shoot, you help other survivors too.That means teamplay is most important thing.
Sound 8/10
Sound for zombies and survivors is good.But weapon sound can get fricky sometimes.
Graphics 9/10
Source engine is something that will live long.It doesn't want a monster engine and looks good.So we can say game looks good.
Multiplayer 9/10
And game becomes super saiyan at this point.If you want classic action try campaigns.Or if you want some serious action try versus mod (zombies vs survivors) and survival mod.MP loses 1 point from me because theres no zombies vs zombies (Maybe zombies are reealy hungry xD).
Menu, buttons esc. 10/10
Background, menu sound and buttons are ideal for everyone.
Story 9/10
Classic and good.Need anymore word?
Price of game 7/10
Game may be great but about the price?A big NO!
Last words 100000/10 (for me :D)
This is a should try game.But first try game from one of your friends.Then if you like game, buy it.Because price is high.