its a simple process
i dont wanna write it all out cause its way too long
but
just lvl up untill 80 or above, i would beat him at 85 because its even hard then
hes not imperitive to the game
you dont HAVE to beat him
but
you get the strongest weapon in the game if you do
so
i would also sugest getting the ultima weapon like wesjr said
now whenever there is a reaction command use it
if you dont you will go down fast
after you use the reaction commands that leaves him vulnerable attack him then
take away a good chunk of his HP and keep dodging his attacks
also
it would be good to have all the Drive Forms at lvl 2 or higher
thats all there is too it
bye now
im obessed with kindom hearts and everything that has to do with it.
ask me some questions.
i will surely have the answer.
and
if i dont ask Mr. King Of Games.
he knows as much or MAYBE more than me.