To use Air Strike, hover over the enemy and click the Mouse button. Press Space to reload when you run out of missiles. If your score goes under zero, your ship will initiate self destruct and destroy everything in a thousand mile radius with zero percent chance of survival. If you reach five hundred points, your ship will have enough energy to lift off again, therefore winning the game.
Your ship has crash landed on an alien planet, you need to use Air Strikes and other weapons from your arsenal (in future updates) to defend yourself from Scavengers.
