Mt. Nibel
Items:
Rune Blade, Plus Barrette, Powersoul, Elixir, "Conter Attack" Materia, "Elemental" Materia, Sniper CR, "All" Materia
To get to Mt. Nibel, take the parth near the Shinra Mansion, Mt. Nibel is just a short walk away.
This first part of Mt. Nibel is fairly linear, although there are a couple of twisting paths off to the side where you can get items. The first path is obvious, but the second path is a little tough to see.
By riding the chutes after the bridge, you can grab several different items. Before you jump into a chute, climb down the ladder and push down teh folding ladder so that you can climb back to the top. Don't touch the large creature at the bottom as you move about.
Chute #1 leads to the ground in front of the large scorpion-like creature.
Chute #2 leads to a small rock ledge that has a Powersoul that Tifa can use.
Chute #3 takes you down to the second level.
Chute #4 drops you off next to a chest containing an "All" Materia.
Chute #5 also leads to the second level.
When you have everything, take the southern path next to the large creature. This will take you to the area where Cloud fell during his flashback at Kalm.
Tip:
You can steal a Gold Armlet from Dragons, which is the best armor available at this point in the game.
The cave below should look familiar to you, so hop down and go inside. You can get the chest by entering thetop hole and following the hidden path marked on the map. Then continue until you see a fountain, but don't forget to grab the Materia next to it. After the fork in the path, go left and you'll see the Nibel Reactor just ahead. There's nothing to do at the plant, so use the door behind it to access yet another Boss.
Now whould be a really good time to save your game. When you're ready, walk up and inspect the Boss to initiate combat.
Boss Fight: Materia Keeper
As yiou might expect, the Materia Keeper is one tough boss. Most of its attacks cause about 200 to 300 points of damage or more, and its Trine attack causes 500 points of damage to each of your characters. Fire spells heal the Materia Keeps and it's resistant to Gravity.
Use your Limit Breaks clupled with hard-hitting spells like Bolt 2 and Ice 2, and then switch to your normal attacks when a character's magic gets low. Also, make sure you have your team ready to cast Cure-All. When teh Materia Keeper's HP gets low, it's start to head itself with Cure 2. Fortunately, it only heals about 1,000 HP each time. WHen it's finally defeated, you will receive a Jem Ring.
Tip:
If you equip the Enemy-Skill Mater,a the player can learn Trine.
The Materia Keeper drops a "Counter Attack" Materia on the ground, so pick it up and equip it right away. You might want to use a Tent after fighting the Materia Keeper, because your MP and HP will likely be low. With the path cleared, yo ucan now leave Mt. Nibel.