Codes for higher levels are:
  Level 2: befe810006f70
  Level 3: cc5ee21000e10
  Level 4: 465fa31001eb0
  Level 5: b57f943000eb0
  Level 6: 1bbeb53010a41
  Level 7: 8ddfb62010ac1
  Level 8: e011f730178c1
  In Level 4, walk around the ring on the floor three times to open the
  floor.  In level 7, when Norlac dives underwater, you must hurry back and
  throw yourself into the whirlpool rather than climbing the ladder.   In
  level 8, to defeat the dragon and Mordamir, use the BLINK spell six
  times, then use the fire protection spell just before he breathes fire at
  you, and not when he takes a quick breath.   When he pauses, hold up the
  amulet and Mordamir will spin in.   Use the STATUE spell three times to
  avoid being killed by the lightning, then just as he starts his next
  spell, put up a SONIC spell.   Use STATUE twice more and when he animates
  the bones, hit the statue just before they reach you.   He will now say
  that you have no more defences, so wait until he holds up the amulet then
  cast the MAGNETIC spell.   Bingo - end of game.