Use 'Z' Key for primary fire, 'X' Key for rocket fire, 'C' for fugas fire. Reach to the green zone. Then you will be teleported to the next stage of the game. There are three levels. At Novice level, you are the most powerful – you have more live, bonuses and military than in the other levels. Bonuses ring high effect. You also get the score after destroying the enemies and completing levels. Getting points, you get the lives. Use 'Pp Key to start, pause or stop.