User blog comment:Lasifer/Bioshock Futuristics Enemies/@comment-3024470-20101120070223/@comment-5338740-20101120070544

Over the course of the game each "Chapter" has a new enemy group. Although the Spetnaz and Knight's do help you. SOme attack you. The Nazi's are they main Antagonist group. But each Chapter has a Antagonist and new characters.