That's actually a very sly way of hiding their extreme guerilla warfare. They can dodge your attacks with flips. They like to jump up and down a lot too, making for an unclear shot. It's best to lure the opponent in with some sort of shiny object. Spice Girls LOVE shiny objects.
Torture is Necessary.
Sure, it would be cool to just snipe them. But that wouldn't be fun, or appropriate. They've been torturing us for months with their meaningless lyrics. So it is important to make sure that the Spice Girl suffers before it dies. If this means five minutes of extreme pain, that's good.