"Secret" Weapon

About
The "Secret" Weapon is the final boss in Heavy Weapon. It appears at the end of level 19 (the final mission) of the game.

It is a huge UFO controlled by the Red Star Dictator. Its weapons are:
 * 2 Energy Beams (1st phase)
 * Rotating energy cannon and Atomic bombs (2nd phase)
 * 4 Homing missile pods (3rd phase)

1st Phase
It appears and starts shooting with Energy Beams. Avoid them, if you get hit by just one beam, you're dead. Be careful, because the beams change their form (X-shape, straight shape, round shape), and the UFO constantly moves to attack you. Not a hard beginning for a final boss. Also, the attacks are getting faster if you keep shooting it, so be careful!

2nd Phase
It got smaller, and unfortunately faster than the first phase. Now, not only does it have a rotating energy cannon but it also drops Atomic bombs. Warning, if an Atomic bomb touches the ground, you're toast. Keep an eye on those atomic bombs and destroy them at once! Pretty challenging phase.

Final Phase
Now, it's even smaller and you can see the Dictator! The ship has now 4 Homing missile pods. Dodge or destroy the missiles, destroy the UFO. The war is over, and you win!