You challenge the alien to a duel. He snarls and accepts your challenge.

"AND WHEN WE BEAT YOU, WE SHALL MOVE ON AND BEAT ALL OF EARTH.....INCLUDING YOUR PRECIOUS WEINER DOG....WE SHALL KILL HIM," he says with a sneer.
"You already did," you say, and point to the UFO's bottom left side.
"Oh. Shoot. Well, anyway, YOU WILL NOW PERISH!!"

To make a long story short, you beat him to a pulp, steal his UFO, blast off to Eternia, steal He-Man's sword and use it to become Master of the Universe. And then this hot babe thing kisses you!*
YOU WIN
YOU WIN
YOU WIN!!
Play again.....
* note: if reader is a girl, substitute "hot man thing" for "hot babe thing"