"General, I suggest we build 5 laser turrets in a row to give them a combo ability."
"How many billion dollars will that cost Lieutenant?"
"Actually it's just $75 sir."
Some advice for the final boss: Keep your distance. Getting close will trigger the bosses homing rocket thingy. Also strafe down when he goes up and up when he goes down. This way you can avoid his mega lasers.
 "Onslaught2"){kind=icon}
 "Mechanical Commando 2"){kind=icon}