You'll need to blast your way through their defenses on three levels of increasing difficulty, avoiding obstacles like enemy tanks, pillboxes, missiles, jeeps, infantry, huts, and more. Destroying these enemies earns you points, and collecting bonus icons scattered throughout the screen can replenish your fuel and ammo.
As you progress, the challenges will get tougher, but capturing the flag and earning as many points as possible is the ultimate goal. If you can overcome all obstacles and achieve this, then you win the game!