One of the changes in the game is that Johnson can be customized in any way possible. The tasks that you have to complete in the casinos are probably the hardest, as you have to use stealth movements to get past security. Some of the challenges that you face are on mountain roads while others are in casinos in Las Vegas. There are also a few cops who will try to stop you from robbing banks and completing other tasks that earn respect from your gang members and rivals.
They will do everything possible to get in your way. Your goal in the gang, while playing as Johnson, is to defeat the other gangs in San Andreas. Once you start to understand where to go in the city and the fastest ways to get there, the game doesn't take as long to complete as the initial run-through. If you plan on beating the game in one sitting, you should plan on spending several hours, as there is a lot of back story given and a lot of challenges to face. He travels from his home on the East Coast to the West Coast so that he can help members of his gang.
Those who have played San Andreas know the story of Carl Johnson. Fight against gangs in San Andreas while driving some of the best cars in the city to earn money.