Use WASD or arrow keys to move. J and X to fire missles (Hold to fire up to 6 at a time) and and C and K are your shield. Z and H for the bomb. Use the gauges on the lower right of the screen to see how many you have left. Oh and spacebar to shoot.
Finding a prototype ship from a defunct military project is odd. Arming that ship borders on madness. Flying that ship alone against an entire invasion fleet is insane. And even worse. You have to go one on one against their secret weapon.