You know, I’m pretty leery when I see trailers marked as leaked these days. Especially when we are so close to the launch of the game, such as the case here with Left 4 Dead 2. So, while I use the term “leaked” very loosely, the trailer itself is pretty cool. You get a better feel for the personalities of the survivors while also seeing all three levels of infected in action. From the standard zombies to the uncommon infected to the special infected, this sequel is posed to be a much more varied ride than it’s predecessor…