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.
