not as hard as ff7, all you have to do is pummel him with your strongest attacks. it helps
to fuse vitality into your materia. blocking can also reduce some kick back and damage
from his attacks

i was at lvl 36 and had 7000 health and he didnt do more than 3000 dmg to me altogether.
use vital slash or quake on him for 4-5000 dmg. or run around until you get the real to
have all of the same pictures on it to do alot of damage to him.

use vital slash use heal im so good but i fell down in last it was easy

use magical punch it will cost 99999 dmg
it was easy...

i know ur all good but i only use my best to kill sephiroth

when you try to beat him 1st or 2nd time?
if 1st just pummel him and keep using curaga even if your health falls below 90% coz his
skills are awsome and damage ALOT.
for 2nd idk i just die