Have key to every level:


Quickly press A, B, A, B(2), A,

Up before the "Start" and "Password"

options are displayed at the title screen.  



Level     Password  
1-1       O8_ _ 8888  
1-2       CVJB 8888  
1-3       GVJD 8888  
1-4       RVJH 8888  
1-5       XVJS 8888  
1-6       XVJY 8888  
1-7       8VBY 8888  
1-8       CYDY 8888  
1-9       MYHY 8888  
1-10      TYSY 8888  
2-1       TZ_ _ 8888  
2-2       QZVJ B888  
2-3       OZVJ D888  
2-4       8ZVJ H888  
2-5       ?ZVJ S888  
2-6       ?ZVJ Y888  
2-7       CZVB Y888  
2-8       QZYD Y888  
2-9       4ZYH Y888  
2-10      KZYS Y888  
3-1       KZ_ _ Z888  
3-2       6ZZV JB88  
3-3       TZZV JD88  
3-4       CZZV JH88  
3-5       2ZZV JS88  
3-6       2ZZV JY88  
3-7       QZZV BY88  
3-8       6ZZY DY88  
3-9       XZZY HY88  
3-10      RZZY SY88  
4-1       RZ_ _ ZZ88  
4-2       JZZZ VJB8  
4-3       KZZZ VJD8  
4-4       QZZZ VJH8  
4-5       VZZZ VJS8  
4-6       VZZZ VJY8  
4-7       6ZZZ VBY8  
4-8       JZZZ YDY8  
4-9       ?ZZZ YHY8  
4-10      8ZZZ YSY8  
5-1       8Z_ _ ZZZ8  
5-2       MZZZ ZVJB  
5-3       RZZZ ZVJD  
5-4       6ZZZ ZVJH  
5-5       6ZZZ ZVJS  
5-6       GZZZ ZVJY  
5-7       JZZZ ZVBY  
5-8       MZZZ ZYDY  
5-9       2ZZZ ZYHY  
5-10      CZZZ ZYSY  
End       CZ_ _ ZZZZ  

Note: "_" indicates a space.