Hey, at Gamestop I've heard they lowered the price of Killzone from $49.99 to $19.99. The problem is, it says STRONG LANGUAGE? Exactly how strong? F word? Constant as in every sentence (not literally), how bad does it get?

Thanks, I really want to buy this game but I don't know how offensive it is, exactly. Please help or tell me where I can get help.