A hardpoint is a location on an airframe which carries wepons.
The plane cant carry weapons, rockets or bombs without adequate hardpoints.
Destroy targets in the air and on the ground to collect points and thus buy new weapons and new planes. Use planes from the time of WW1 to the latest models. Collect weapons and score points, avoid or cut down barriers. How far can you get?
Destroy obstacles, military facilities and vehicles but do not shoot at civilian targets because you will loose all your points. If you get hit, save yourself by jumping out of the plane in time. By doing that you will keep all your points.