When you complete the following cases on the indicated setting the corresponding feature will become an available option in the game.
Unlock Code 9807 Case:
Complete ALL cases on the Hard difficulty setting
Unlock ALL Tracks:
Complete ALL cases including Code 9807 case on the Hard difficulty setting.
Unlock File Mode (Repeat a Previous Mission on any one Case):
Complete a case on Normal or higher difficulty setting
Unlock Sports Car and Race Car:
Complete the case.
Added by: Sanzano Aug 26th 2008, ID#3003