At the Main Menu, select Passwords. Enter the following passwords to unlock these cheats. If you entered the code correctly, you'll automatically go to the Password Contents screen.

Level 2: CVWVC/4ZN
Level 3: 9SZVCW7*X
Level 4: CV*VT*6*N
Level 5: 9SMSCL5*X
Level 6: CSPS9Q6ZN
Level 7: 9WRVWL5ZX
Level 8: CSTSCR4*N
Level 9: 8VWVTL7*X
Level 10: 9TZVTQ5*N
Level 11: 9V*SCQ7*N
Level 12: 1TTSWV5ZX
Level 13: 9STVCV5ZX