Complex sentence: In the original "Max Payne", Max is an NYPD police officer and an undercover special agent for the DEA turned an unstoppable vigilante following the murder of his family and later also the murder of his police partner that he was framed for.
Split into simpler sentences: In the original "Max Payne", Max is an NYPD police officer and an undercover special agent for the DEA. Max becomes a unstoppable vigilante following the murder of his family and later the murder of his police partner, which he was framed for.