What is Niko Bellic's Moral Code in GTA 4?

Niko Bellic's moral code in "GTA IV" revolves around the concepts of loyalty, revenge, and the quest for a better life. Despite his criminal activities, he seeks to protect his family and friends, often grappling with the consequences of his actions. Niko is driven by a desire to escape his violent past and achieve a sense of redemption, which often leads him to confront the moral ambiguities of his choices throughout the game. Ultimately, his code reflects a complex blend of survival instincts and a quest for personal integrity in a corrupt environment.