At the "Press Start" screen, quickly press Up(2), Down(2), Left, Right, Left,
Right, L1, R1 on controller two. If you entered the code correctly, the
message "Advanced Mode" will appear in the corner. This mode makes the game much
harder. This code is revealed by the game when it is completed with 100% weapons
and the best ending. Wait approximately five minutes after the "The End" screen
to see the code.