Play as Yuffie:
Beat arcade mode as Cloud.

Play as Vincent:
Beat arcade mode as Tifa.

Play as Zack:
Beat arcade using all FF7 characters.

Play as Django:
Beat arcade mode using all non-FF7 character.

Play as Koji Masuda:
Beat arcade mode using any male character.

Play as Clair Andrews:
Beat arcade mode using any female character.

Alternate costume:
Hold Up while selecting a character.

Cloud & Tifa's 3rd costumes:
To get Cloud's 3rd costume, beat the game with Yuffie. To get Tifa's, beat the game with Vincent. To select these costumes, hold Down when selecting Cloud or Tifa.

Even more costumes:
Fulfill the following 8 conditions to unlock extra costumes. The order is not important, though the costume you enable is fixed (ie. Yoko is always the first new costume, regardless of which condition you meet). Once you've unlocked a third costume, press Down while selecting a character to use it.

- Beat arcade mode with any character without continuing
- Beat arcade mode and get Ehrgeiz with any character
- Perform a 10-hit combo in practice mode
- Get 35,000 points in Battle Beach mini game
- Get 2,000 points in Infinite Battle mode
- Enable all FMVs in the movie player
- Get a perfect score in Evil panel (computer must have 0 panels)
- Beat computer in Battle Runner on any level with any number of laps

You'll unlock new costumes in the following order:

1. Yoko
2. Han
3. Doza
4. Inoba
5. Sasuke
6. Jo
7. Lee Shuwen
8. Godhand

Taunting:
To taunt, press Select and a direction on the D-pad. Some characters have more than one.

Alternate Vincent Picture:
At the Character Select screen, highlight a character preceding Vincent. Press Up on the D-pad, then Up-Left or Up-Right, then Left or Right (like a 'fireball' move). You'll see Vincent as a Turk.

Alternate Opening FMV:
Let the opening loop several times, and eventually you will see the alternate opening.

Extra Battles:
Fight through Arcade mode and beat Sasuke in less than 3 minutes 20 seconds. If you do this, you will run through the second gate to fight Cloud and Tifa before Django.

Evil Panel:
Beat Battle Panel 10 consecutive times. Then at the main menu, select Battle Panel while holding L1+L2+R1+R2 to access Evil Panel.

Racetrack Mode:
At the Opening screen, press Start and L1.

Infinite Mode:
At the Opening screen, press start and R1.

Endings:

Each character has only one ending (except Han - see below), so it doesn't really matter whether or not you kill the final boss.

Han's Good Ending:
Han is the only character to have two endings. To get the good ending, you have to beat the final boss before the credits stop rolling. To beat the final boss, you must break open the two boxes which will reveal two pieces of the sword. Throw the two pieces of the sword at the boss, who will explode. Now quickly run around gathering all of the items, including Han's leg. Viola!