Here's the level passwords:

LQYBM, YQPBV, RALLV, AAYLV, NQBBM, XAILV, PQWBM, WAXLV, TQHBV, EQIBM, IAMLV
ZAGLV, VQQBM

As you will see, the game is quite complete... but, the ending sequence does not seem to be programmed to function. Else, perhaps I just didn't trigger it right...