Just a long grind of a trophy.. For the A ranked Characters, getting into a direct fight can be a drag. To make things a little easier, Cervantes is quite a good Character that I found could handle the A ranks well. Most fights could be started off by using Dark Geo Da Ray (away R1 Default Controls). This opened the opponent for a very easy Spam of Geo Da Ray During Dread Charge (Down, Down away, Away, Triangle). By keeping the opponent at arms length, they will mostly try to run at you, so this move can be over used. Mixing it up a little with triangle attacks is adviced too. Makes the A ranks loads easier. I used this solution and had most beat within 2 or 3 retries for the worst ones.