Complete the following tasks to get the result:
Be Orm: complete Event Battle using Chopper
Be Crocodile (Mr.0): complete Event Battle using Robin
Be Smoker: complete Event Battle using Zoro
Be Wiper: complete Event Battle using Luffy
Be Enel: complete Event Battle using Luffy or Wiper AFTER unlocking Orm, Smoker, Crocodile & Wiper
Be Hina: complete Event Battle using Usopp using hard difficulty AFTER unlocking Enel
Be Bon Clay: complete Event Battle using Sanji using hard difficulty AFTER unlocking Hina
Be Ace: complete Event Battle using Smoker using hard difficulty setting AFTER unlocking the 3rd costumes for Zorro, Nami, Usopp, Sanji, Chopper, Luffy and Robin by finishing training mode with each of them
Be Shanks: Unlock the Windmill Village & Marine HQ stages and finish Event Battle mode using hard difficulty with Zorro, Nami, Usopp, Sanji, Chopper, Luffy and Robin. Now complete Event Battle Mode with Luffy using the Hard difficulty setting
Zoro machine gun sword: For Zoro machine gun sword move, You must use Zoro and press, X X O (circle) and Zoro will do a machinegun sword attack to your opponent!