Shoot him /Option 1
From Create Your Own Story
You shoot your him in the face. He falls to the ground and dies. About twenty minutes later cops show up. The cops tell you nice job. They ask you to get in the car. You get in the car and they ask if you're alright, you reply yes. You ask them what's going on. they say that you were undercover trying to get rid of the gang. Now your missions complete.