
In order to initiate the battle with the mysterious swordsman knows as Meta Knight, you will need to pick up the Sword power in the middle of the battlefield. During the battle, Meta Knight will fly around the arena, not only dropping bombs at Kirby but also lunging at him with his own sword. The trick is to swing the sword you were given right as Meta Knight lunges towards you, as this will actually stun him.
After taking a certain amount of damage, Meta Knight will actually split into four different versions of himself. After he does, he will also drop four separate columns of rocks. You will need to quickly destroy the rocks before Meta Knight tries to slam through them, as this will cause him to get stuck and be vulnerable toward attacks. Also try using the Zap Sword, which allows Kirby to summon lightning so he has invincibility while using his spin attack.