Fire Shark.

 No.  Code  Effect
   1  9TEA-BGKC + AYEA-AABE    Start with 5 lives
   2  9TEA-BGKC + A2EA-AABE  Start with 6 lives
   3  9TEA-BGKC + A6EA-AABE  Start with 7 lives
   4  9TEA-BGKC + BAEA-AABE  Start with 8 lives
   5  9TEA-BGKC + BEEA-AABE  Start with 9 lives
   6  ATEA-AA5J  Infinite lives
   7    AFMT-AAEC  Start with 1 bomb
   8  AZMT-AAEC  Start with 5 bombs
   9  A7MT-AAEC  Start with 7 bombs
 10  BFMT-AAEC  Start with 9 bombs
 11  AFMT-AACC  Start with 1 bomb after losing a life
 12  AZMT-AACC  Start with 5 bombs after losing a life
 13  A7MT-AACC  Start with 7 bombs after losing a life
 14  BFMT-AACC  Start with 9 bombs after losing a life
 15  AK8T-AA4L  Infinite bombs
 16  ANEA-BE2A  Start with 4 credits
 17  A6EA-BE2A  Start with 8 credits
 18  BEEA-BE2A  Start with 10 credits
 19  DEEA-BE2A  Start with 26 credits
 20  GJEA-BE2A  Start with 51 credits
 21  NNEA-BE2A  Start with 100 credits
 22  ATFA-AA3R  Infinite credits
 23  LCGA-BNWY  Each power-up item is worth 3x normal
 24  BBMT-AACA  Keep regular weapon upgrade after you lose a life