As you may know Mega Man 3 is a 1 player game, but
you can use the second players controler and hold right to jump realy high, another bonus to this is that if you hold right and go down a hole while you have an enemy on your screen you will appear to lose all life but jump out anyway and you will be invincible.THE DRAWBACK you are not invincible to spikes and you lose the advantage if you pick up any life. You can also stop most enimies in place by holding R, U, A on the second players controller.