Random Groove:
Press Start at the Groove selection screen.
Boss challenge mode:
Boss challenge mode becomes available under the following
two conditions. Both hidden Bosses (God Rugal, Shin Gouki)
must already be defeated and unlocked. Hold Triangle + Square
while selecting arcade mode.
One on three tag team mode:
Highlighter any fighter at the character selection screen and
press a button. Allow time to run out and the game will start
in one on three tag team mode. Note: Do not select one on one
battle mode.
Extra options:
Clear Boss challenge mode with no continues. The
"Extra Option" becomes available in the game.
Extra color edit mode options:
Press Start while editing the colors for your character to
display more options on the left side of the screen.
Infinite custom groove:
Defeat all characters straight in survival mode. The custom
groove option settings will become infinite.
Middle Boss conditions:
The middle Boss appears when the following conditions
are all fulfilled:
No time over has occurred.
The CPU has not made over six "first attacks".
The CPU has not made three or more Special KOs.
Victory quotes:
Hold Start + FP after winning a stage to make your character
say an opponent specific quote. Hold Start + FK to make the
character talk with a team member.
S Groove gauge recharge:
When playing in S Groove mode, hold R1 + R2 to quickly recharge
your gauge. Note: Your gaage must not be full for this trick to work.
Sites: