Shoot at her, with mitigated results.

You stand firm on your feet and fire at her with all dials set to 11. In a few second she will be naked and horn as he'll and your fight will be won.

The pink ray tears through her dress and makes it disappear.

Underneath it all she was wearing was a silver bikini a strange amulet that you did not spot before because of the dress. (and because it was lost between her gigantic boobs.)

You aim at her panties, getting ready to dive into that pussy and stuff her with enough seed of justice to pacify her.

The ray hits the glittery silver fabric of the alien's bikini but it doesn't make it vanish away.

Instead it diffracts it into a million other thin rays of different colors. All around you clothes disappear, girls get giant boobs, boys foot long dicks , boys turn into girls, girls into boys, animal tails an ears grow on some. Each ray as a different action.

The beach breaks down in total chaos as a horde of naked, horny, morphed people either flee or try to fucked each other.

In surprise you lose your aim and the ray goes to hit the strange amulet, the polished surface of the gem reflects it back at you and you get hit by a powerful beam of energy.

When you finish blinking, all the people around you are tiny. You are afraid that they have shrunk until you notice that it is you that grew to the size of the giant girl.

The guns remains in proportion to your hand but it isn't the only thing that changed. Rather than a mask you know really have a horse head, accompanied by a tail, a pair of hooves and a giant horse dick even bigger than before even scaled to your body.

You hope that this condition isn't permanent but it would be nice to be able to use this giant form in future fights.