Clean pause screen:
     Press X + Y after pausing the game for a clear pause screen.

Control Camera During Victory Pose:
     While  your character is doing their victory pose, press and hold
the  B  button  and use either control pad to rotate the camera around
them.

Hidden wallpapers:
     Put the DOA2 disc into your CD-ROM drive on your computer to find
wallpaper images in the Bonus directory.

Secret Arena:
     Finish the game on very hard level with each of the 12 characters
to unlock a secret arena.

Play in Aeriel Garden at Night:
     First  enable  the  level  select  for versus mode. Now highlight
Aerial Garden and press Y or R.