Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  14 gold pieces

Level 6 of the Dungeon
(3, 5, D:6)
  10 stones

Level 7 of the Dungeon
(0, 0, D:7)
  14 gold pieces
(12, -7, D:7)
  14 stones
(12, 3, D:7)
  a potion of magic
(16, 2, D:7)
  a +0 leather armour