Key to Every Level

At the Title screen, before Start and Password appears, press A, B, A, B, B, A, Up.

Level Passwords

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.