Walk-thru - Disk 3
This is an unofficial walk-thru of the game. Here you will find a way to defeat the game as well as some tips, cheats and other helpful matters that will help you as you play Final Fantasy VII.

The Final Battle
Before you make your way down, be sure that you have plenty of supplies - it’s a long a journey. As you get deeper and deeper into the crater, your party will eventually splint up into two groups. Be sure to look around closely, there are a lot of useful items — like Materia.
Materia Check List:
HP Absorb Materia
Tetra Materia
Shield Materia
Counter Materia
W-Magic Materia

Sephiroth
Be sure to pick up the Save Crystal right at the beginning of the caves - you can put a save point a right in front of the last area. When you get to the bottom of the crater, you’ll want to save your game and adjust your Materia. Your about to face the first of three powerful bosses. After you beat Genova, you’ll face Sephiroth - the first part of him anyway. For a quick win, use the Knights of the Round. When you defeat the first part of Sephiroth, you’ll then face Sepheroth in his true form. Watch out, he’s tough. Just use the Knights of the Round and then use the Mime Materia to mime the Ultimate End spell - that’ll hurt him really good. After you defeat Sephiroth, prepare for one of the best game endings ever witnessed by the human eye.