ASP Refuel:
During a game, press START to pause the game. On CNTRL II, press A B A B SELECT A B. Your fuel and armor will be refilled, and your supply of missiles will double.
Super A-10:
Begin a new mission, choose the A-10, and begin. As soon as GOOD LUCK disappears, shoot your 30mm cannon once, then hold X. Keep holding X until SUPER A-10 appears in the bottom left corner of the screen; it can destroy buildings.
Sites: