I played it on Proud Mode and beat it a while ago, All the Organization bowed at my feet, I remain undefeated, against them, and I only died in the beginning of the game cause I was so weak fighting strong heartless and the DoorHeartless.......I am unstoppable, Sephiroth isn't hard, he just likes to use cheatful tactics, to surprise and catch U off guard, cause I beat him with the Oblivion keyblade at level 81....