help me !!!!

i have played the game for some time now and i really enjoyed it until i met aboss called dark elf he´s the boss after troia i have been trying to beat him for about three days now but he just keeps hitting me for 9999 so if anyones got any advice to make me beat him i would REALLY appreciate it

Did you go see Edward and are you making sure not to have anything metal equipped?

oh thanks ill try that

You have to have the Twin Harp from Edward in your inventory. Then he will kill off most of your party, but you will be saved.