Have only Sabin in your party. Take the airship to Narshe and fly North-East. Land at a place that looks like this-
Mountain
/
^ /
( )
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*
* * *
*
*= tree
- and walk into the tree in the middle. Talk to Duncan and he will teach you Bum Rush!
2- Steal from the Aqualia bird, found in the Pheonix Cave.
3- Get the Gem Box, and bet it at the Colloseum. Win to get an Economizer.
Have everyone in your party know Osmose and Rasp, and have them equipped with a wall ring. Every turn, use Rasp, until you run out of MP. Then use Osmose. When he runs out of MP he dies, but can't use ULTIMA!
On the island in the World of Ruin where you start with Celes, have Locke steal from the monsters. Peepers give Elixers, and Earthguards give Megalixers!!!
Almost every grandfather clock in the game contains an elixer. Check them out!
In the Fanatic's Tower, go to the right of the first treasure chest and press X . you will hear a boom. Then, 1 floor below it, a new room with the Air Anchor will have opened up!!
To save Shadow, after Kefka kills Gehstal, you have a short time to get off the Continent. Once you get to the end, it asks you to stay or wait. Choose wait, and do it again.Then choose wait for Shadow. He will come and jump off with you.
In the World of Ruin, get Locke in your
party. Go to Narshe and have him unlock the doors. You will find an old man at the bottom of the weapon's shop. He will ask you if you want the Sword or Magicite. Choose wisely, as you can't change. See the Ragnarok section of my site for pros and cons.
Get the Ragnarok Sword. If you bet it at the Coloseum, you can earn Illumina!!!