Easier Difficulty Level:
Highlight the "Easy" difficulty option, then repeatedly tap Left until "Very Easy" is displayed. 

Platinum Fighters:
Select "SD Hiryu" mode and fight in the circuit. Defeat all platinum characters and collect all ten
medals only then will the platinum fighters be available.

                             Game Shark Codes

     Infinite Health P1 - 8020B7B1 00C8 
     GS Button For 25% Health P1 - 8820B7B1 0032 
     GS Button For 50% Health P1 - 8820B7B1 0064 
     GS Button For 75% Health P1 - 8820B7B1 0096 
     GS Button For 1-Hit Death P1 - 8820B7B1 0001 
     No Health P1 - 8020B7B1 0000 
     Infinite Health P2 - 8020BC0D 00C8 
     GS Button For 25% Health P2 - 8820BC0D 0032 
     GS Button For 50% Health P2 - 8820BC0D 0064 
     GS Button For 75% Health P2 - 8820BC0D 0096 
     GS Button For 1-Hit Death P2 - 8820BC0D 0001 
     No Health P2 - 8020BC0D 0000 
     Infinite Special P1 - 8120AEB4 0190 
     No Special P1 - 8120AEB4 0000 
     Infinite Special P2 - 8120B1B0 0190 
     No Special P2 - 8120B1B0 0000 
     1 Win to Win P1 - D020C27F 0000 or 8020C27F 0001 
     P1 Never Wins - D020C27F 0001 or 8020C27F 0000 - D020C27F 0011 - 8020C27F 0010 
     1 Win to Win P2 - D020C27F 0000 or 8020C27F 0010 
     P2 Never Wins - D020C27F 0010 or 8020C27F 0000 - D020C27F 0011 - 8020C27F 0001 
     P1 Character Modifier - 8120FFDE 00?? 
     P2 Character Modifier - 8120FFEA 00?? 


SP Hiryu Mode Only

     P1 Magic Level Always 0 - 8020B924 0000 
     P1 Magic Level Always 1 - 8020B924 0001 
     P1 Magic Level Always 2 - 8020B924 0002 
     P2 Magic Level Always 0 - 8020BD80 0000 
     P2 Magic Level Always 1 - 8020BD80 0001 
     P2 Magic Level Always 2 - 8020BD80 0002 


     Quantity Digits to Accompany Character Modifier Code
     Virtual Hiryu Mode Only
          00 - Ryu Hi 
          01 - Hayato 
          02 - Min Min 
          03 - Shouryu 
          04 - Raima 
          05 - Gengai 
          06 - Kate 
          07 - R. Falcon 

     SP Hiryu Mode Only
          09 - Ryu Hi 
          0A - Hayato 
          0B - Wiler 
          0C - Shouryu 
          0D - Yuka 
          0E - Suzaku 
          0F - Ryumagu (??) 
          10 - Powers 
          12 - Robo No Hana 

     Both Modes
          11 - Ryumaov