User blog comment:Spawny0908/UPDATE!!!!: The Free DLC pack is coming in...../@comment-107.5.143.219-20110803090704/@comment-2113545-20110803111924

Some of the houses are climbable. Not sure if they're out of bounds though. But with the Retcher's explosive bile you'll be a sitting duck. With the new Undead Overrun better to keep moving.