Extra Options:
While at the Options screen from the main menu or item screen, press L1, L2, R1, or R2. Then an
Extra Options menu will appear with the following options below: 

     Weapon Control: Press/Switch 
     Blood Color: Normal/Green/Violet/Black 
     View Control: Normal/Reverse 
     Retreat Turn: Normal/Reverse 
     Walk/Run Control: Normal/Reverse 
     Auto Aiming: On/Off 

                             Game Shark Codes

     Press [Select] Health Restore -
          d00bc76c0001 
          300ba0bd0040 
          d00bc76c0001 
          800ba0be0006 
     Press [L2+Triangle] - 
          d00bc76c1100 
          800bca34ffa0 
     Press [L2+Circle] Rifle -
          d00bc76c2100 
          800bca34ffa1 
     Press [L2+X] Shotgun -
          d00bc76c4100 
          800bca34ffa2 
     Press [L2+Square] Hyper Blaster -
          d00bc76c8100 
          800bca34ffa3 
     Press [L1+Triangle] Rock Drill -
          d00bc76c1400 
          800bca340082 
     Press [L1+Circle] Chainsaw -
          d00bc76c2400 
          800bca340085 
     Press [L1+X] Katana -
          d00bc76c4400 
          800bca340086 
     Press [L1+Square] Axe -
          d00bc76c1800 
          800bca340087 
     Map - 800bcb980002