Your job is now to flight with your craft above the water surface. Destroying enemy alien crafts and energy generators. When you destroyed enough generators, the energy shield from the main pyramid fails, and you can attack the level guardian. Once he is destroyed, you use the tunnel, which connects the underwater colonies, to get to the next one. You will play all eight colonies. While in the tunnel, you have the chance to collect power-ups to regenerate your ships energy (health). Inside a level, you have to live with the energy you currently have. Oh, and by the way, you have, like in reality, only a single life.