Fractalus is an extremely hostile planet. Already your fellow pilots have been shot down by the dreaded Jaggis. Now you're in the cockpit of your Valkirie fighter ready for action.
After take off, you dive down to fly over a fractal generated landscape. Fractals are randomly generated mathematical shapes that, in this case, form a realistic landscape. This includes mountains that you can fly around, gulleys you can fly through and landing areas where you must land to rescue your fellow pilots.
The Jaggis are naturally out to stop you and shoot at you from gun emplacements on the ground and on mountain tops as well as from their saucers.
Your Valkirie fighter has no less than eighteen different instruments including a radar that will locate your fellow pilots. It is vital that you get to know your instruments well as in the game's later levels you have to fly in darkness by your instruments alone.
When you land to rescue a pilot, you have to turn off your systems so that you don't fry him on your shields. However, you should keep a watchful eye, for the figure running towards your ship my in fact be a Jaggi. Once you're sure it's a pilot then open the door and let him in or he'll quickly get impatient and start banging on the door.
Leave him too long and he'll suffocate losing you valuable points.