Operation Abyss: New Tokyo Legacy

To earn this trophy, you must collect the Muramasa and the MURAMASA. The Muramasa is a level 15 item and it can be dropped from Rank B codes after battles. It can be also gotten through gamble codes, by using them on items between the levels 12-18. The MURAMASA is a level 40 item and it can be dropped from Rank S codes after battles (Babyl Sphere C24 has the best chance to drop these kind of codes). It's nearly impossible to obtain one from this method so the best method to get a MURAMASA is through gamble codes. Since it's a level 40 item, you need to use a gamble code on a item that's level 37 or higher. If you don't have an item with that high of a level, you can always use gamble codes on lower leveled items and save whenever you get a higher leveled item then reload if it's a lower leveled item. With save scumming, you can keep getting higher leveled items until you get a level 37 or higher to use to gamble for a MURAMASA.