Extra options
 
 Beat the game on the very hard difficulty level. Then, the following
 options will now become available: Polygon test (view enemies from
 any angle), Mission select, Movie test (view all FMV sequences), and
 Audio test. 
 
 Extra continues
 
 Start a game in single player mode. Then on controller two just
 before losing your last life, press Start to gain three additional
 continues. 
 
  Game Shark Codez:
 
                     
  Infinite Ammo P1      
  800B94BC 6B00
                     
  Infinite Grenades P1  
  800B94C6 0318
                     
  Infinite Health P1    
  800B94BE 0064
                     
  Infinite Continues P1 
  800BA954 0005
                     
  Infinite Ammo P2      
  800B94CC 7200
                     
  Infinite Grenades P2  
  800B94D6 0318
                     
  Infintie Health P2    
  800B94CE 0064
                     
  Infinite Continues P2 
  800BA985 0005