It's designed to help DMs up their game and make it fun for players and DMs alike.
From the campaign:
Play Dirty 2: Even Dirtier continues the trend its predecessor began. PD2 presents even more nasty, underhanded and deceitful tricks to get your players emotionally involved in your characters and your world. John pulls no punches, using everything from new technologies and old conman tricks to give you all the tools you need to get your players to care.