The possessed Luigi is a challenging opponent, wielding the Racket of Lucien. He has enhanced stats and frequently uses powerful Zone Shots and Special Shots. Your primary strategy is to break his rackets. Focus on returning his Zone Shots with Trick Shots to avoid damage and build your own energy. Counter his Special Shots with your own or perfectly timed blocks. Luigi will also occasionally summon dark energy balls; hit these back to him to stun him. This battle is a test of endurance and racket management.
