To master Grand Theft Auto IV (GTA IV) , focusing on Liberty City's dense environment and its nuanced combat and social systems is key.
Complete 30 "Most Wanted" missions and 20 "Vigilante" missions found in police vehicle computers. Quick References & Resources GTA 4 Guide - IGN grand theft auto IV
Complete all main missions and specific side tasks like Little Jacob’s drug deliveries and Brucie’s exotic exports. To master Grand Theft Auto IV (GTA IV)