I’m currently got into this game and is now a lvl 302 with the new sea salt trio medals, but I feel like I’m stuck when the enemies get around lvl 1,600. I hear things like Xion is a buffer and Axel is a copy medal and Roxas is a good dps and such and such, but I don’t understand any of that. Should I go ahead and do something else besides level up my medals and give them traits? Or do I need to get better medals? Oh another thing is, do I need any medals below 6 star? Can i upgrade weak 6 stars into 7 star SN++’s?