Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  11 gold pieces
(10, -4, D:1)
  6 gold pieces
(18, -1, D:1)
  28 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 plate armour
(3, 2, D:2)
  a +0 leather armour
(6, 13, D:2)
  3 gold pieces

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 ring mail