There are two pats to this:
1) Obtain the All Creation item after clearing the pagoda in Wutai Village.
2) Obtain all of Yuffie's other Limit Breaks through combat.
I will be going over both of these!
All Creation You will have to do the Wutai Village sidequest if you want to get this out of the way early (you can apparently skip this first part if you're on
). Wutai Village is in the Northwest corner of the map, and you can get to it as soon as you have the Tiny Bronco. During this quest
you will temporarily lose your materia, so beware The quest is fairly straightforward; you'll need to find Yuffie a few times and do some battling. I had trouble finding one of her spots, so here are the spots:
*** Spoiler - click to reveal ***-Behind the folding screen in the old man's house.
-In the item store after you open the chest (talk to the Turks in the Turtle Paradise Bar if you can't open the chest).
-(Optional Dialogue) Go North to the Wutai Head Temple (the building that isn't the Pagoda). Talk to the man until his dialogue changes. You can find a weapon for Yuffie in this building too (it's in the hidden corridor in the resting room) that will help later on.
-Final location is in the pot in front of the Bar.
At the end, you will have to fight
, a Level 39 boss, and then the quest is done, and you'll get all of your materia back. Now you can battle at the Pagoda, which you'll need to complete in order to get the All Creation materia.
I came back to do the Pagoda when Yuffie was around Level 39. The Pagoda consists of 5 fights, but you can leave and heal/save whenever you like. Only Yuffie is allowed to fight in these battles; they are all 1 on 1. I was able to get through it using the Neo Bahamut summon, which you hopefully found in the Whirlwind Maze (if you've not got there yet, don't worry, but keep an eye out for it when you reach that point). Bolt 3 also came in handy here, as did a Limit Break or two. Though all of the fights felt about the same in difficulty, the final boss of the Pagoda,
, is Level 41, which can be a bit much if you're underleveled. As usual, you can just use Battle Boost by pressing Right Stick if you don't feel like grinding. When you beat the last boss, you'll get some dialogue, and receive two items: one is All Creation, which you're looking for, and the other is the Leviathan summon, which is its own achievement!
Yuffie's Limit BreaksLike most party members, Yuffie gains Limit Breaks through combat. You'll need to defeat a total amount of enemies
with Yuffie getting the final blow, and use the first Limit Break in each level a certain number of times. I waited until I had The Highwind to do this, as it made things a little easier.
Here is a general sense of what you need to do to get Yuffie's other Limit Breaks:
Level 1
1a) Greased Lightning- You start with this.
1b) Clear Tranquil- Use Greased Lightning 8 times.
Level 2
2a) Landscaper- Defeat 64 enemies with Yuffie.
2b) Bloodfest- Use Landscaper 7 times.
Level 3
3a) Gauntlet- Defeat 128 enemies with Yuffie.
3b) Doom of the Living- Use Gauntlet 6 times.
For enemy defeats, I went to the forests near the Gongaga area. Sometimes you can find a group of six frogs, which will knock out a decent chunk every time. What I did is I would pair up Yuffie with one of your other characters that needs enemy defeats, and just use basic attacks and mash A throughout the battle. If a character doesn't need defeats, just have them defend. Turn on x3 speed by pressing Left Stick and you should be done within 30 minutes or so, depending on what you're finding.
For using Limit Breaks, I went to Cactus Island, just South and West of Cosmo Canyon. The island itself will not appear on the world map, but it's easy enough to find. You will need The Highwind to get here. I had intended on doing this somewhat legit, but the temptation of instant Limit Breaks from Battle Boost (pressing Right Stick) was too much. Before you find a battle, make sure you're on the correct Limit Level in the Limits menu. Find a Cactuer in the desert area, and just spam Limit Breaks with whichever characters need to use them. I was around Level 40 when I did this, and I found that even Limit Breaks were missing a lot of the time, which means more uses per battle! With this strategy you should easily get all of your uses done in 10 or 15 minutes.
Once you've gotten all of the Limit Breaks, and you have the All Creation item, go into your item bag and use All Creation on Yuffie. This will give her her last limit break, and your achievement!