Max Payne's back story is the key factor in his actions. After losing his family, he's filled with rage and a sense of justice. This means he won't stop at anything to take down the bad guys. He's not afraid to go into dangerous situations alone because he has nothing left to lose. His past trauma also makes him a bit reckless at times, but his determination to avenge his family keeps him going no matter how tough the odds are.
His back story makes him very driven. Because of the murder of his family, he's out for revenge, so he's more likely to take risks in his actions.
The influence of Max Payne's back story on his actions is profound. Having lost his wife and child, he has a deep - seated need for vengeance. This makes him act impulsively at times, charging head - first into dangerous situations without much regard for his own safety. His actions are also shaped by his sense of justice that was instilled in him as a police officer. But now, his own brand of justice is more personal and extreme. He's constantly in a state of emotional turmoil, which is reflected in his violent and often unorthodox methods of dealing with criminals. His back story has turned him into a lone wolf, a man on a mission, and he'll do whatever it takes to get to the bottom of the conspiracy that led to his family's death and make those responsible pay.