All you really have to do is complete lots and lots of missions but thats not all because you might want to complete some side missions aswell because the missions get harder as you go like jive drive and papi don't screech there hard ones. They took me ages to complete then I finally did it. Any way you have to get to the missions for lance and after snitch hitch you will unlock the mission from zero to hero and after you complete that mission you will unlock the second and when you unlock the second island you will unlock boats, aeroplanes and helicopters it's great and fun