Surely you didn't think that you could cruise through LA did you? Now here's where the game gets really hard. Part of Castaldi's plan is to get a hit on Maddox, a guy with high rank in the FBI. To do this he's hired some hitmen, but unfortunately they are so disorganized that they left calling you until the last minute. Rush out west towards Beverly Hills. Once there pick up the hitmen on the top floor of that car park. Then rush towards Downtown which is in the far North. I find it easier to go East first the head North towards the Chinese Theater. Then watch how crap the aiming is of your hitmen. Unfortunately, the cops are waiting for you and aren't too happy that you just tried to kill the head of the FBI. They come after you like lunatics and you have got to go to the far South. First exit Downtown then go South along that road that goes in a straight line. Then when you reach the Santa Monica Freeway go left and then take the next right. Here is a good place to try to shake the cops, or at least keep them at bay for a moment. Rather than go right, go around the little square a couple of times and the cop will crash because he tries to go through the concrete, then take off towards those warehouses. When you reach them lose the cops by driving around in circles, but beware of those that come head on at you, then park up. It'll undoubtedly take at least a few goes to complete, but it's not the hardest mission of all.