Location: Future 33
Floor: Purple Checkerboard
Items: Lens of Truth
Boss: Gleeok (1 head)
This is interesting for the thief, because he can make it out of the dungeon with a spare key, to be used elsewhere as desired. That means the thief should use a different path.
Main (Wizard's) Path:
Go east twice and get the compass, and once more to get a key.
Go back west twice, and then go north to get a key.
Keep going down the path, past the passageway you can't get to, east north north north.
Go west to get a key, and back east. Then go east to get the boss key and back west.
Get back to the entrance. West south south south west south west.
Go west to get a key. Go west, north, east to get a map. Go north twice for the last key.
Go back south south west south. Go west and into the passageway.
The rest of the path is linear. Go west, north, west, west, south, west, and north.
Kill the boss, collect the heart container piece, and go west to claim the lens of truth.
Thief's Path:
Go west and get the key. Go west. This locked door is the one that we won't open.
Go north and east to get the map. Then north twice to get a key.
Go back to the entrance. South south west south east east.
Go east twice and get the compass, and once more to get a key.
Go back west twice, and then go north to get a key.
Keep going down the path, past the passageway you can't get to, east north north north.
Go west to get a key, and back east. Then go east to get the boss key and back west.
Go south, and use the hookshot to cross the gap. You'll be using your first key here.
The rest of the path is linear. Go west, north, west, west, south, west, and north.
Kill the boss, collect the heart container piece, and go west to claim the lens of truth.