Valve details Left 4 Dead 2's Dark Carnival

Valve has sent us over more details on the Left 4 Dead 2 campaign, Dark Carnival, which is playable at PAX 2009 this weekend, confirming earlier news from Eurogamer.

The new Boss infected monster known as "The Jockey" is the third revealed so far and it lets you attack lone Survivors and "wrestle control of their movement away from them-into fire, off ledges, or straight into the middle of a zombie horde."

Also debuting is the "Zombie Clown," the "uncommon common" exclusive to the Dark Carnival campaign, and a few more of the "20-plus items coming in the full product (electric guitar, machete, and the American baseball bat being offered as a pre-sell exclusive with select retailers)."

Game's out exclusively on November 17 for PC and Xbox 360. Shots after the break.