Mission 10: Legacy
In this mission you will be on an island. Head towards the main objective and to the top of the hill where you will find an enemy camp. Now head to the front gates of the mansion, but do not enter the mansion grounds yet! Instead you should go to the very top of the hill until you see a wooden boardwalk. Drop down the boardwalk to find the dirt bike and drive it down the ramp in front of you to jump to the mansion grounds.