This Taiwanese Website has what appear to be the two movie posters showing off the two unrevealed campaigns in Left 4 Dead 2. One poster is titled "Hard Rain," subtitled "Come Hell and High Water," depicting a flooded factory complex, and the other is "Dead Center," subtitled "Prices Aren't the Only Things Getting Slashed," showing the now-clichéd zombie location of a shopping mall. Thanks Kotaku.