Bonnie has gone mad! He sees everyone as a reflection of himself! Most of his reflections are his foes. You must destroy them before they touch Bonnie.
There are also his friends with identical appearance. You must save your friends by touching them. Saving them heals your wounds. If you shoot a friend, you are temporarily forbidden to fire.
But how we can we know who is foe or friend? Pressing and holding “Clairvoyance” button helps you see the true faces of the rabbits. But you cannot attack or move while in clairvoyance mode.