Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  13 stones
(6, -5, D:5)
  a +0 ring mail
(7, -3, D:5)
  6 gold pieces
(7, -1, D:5)
  2 large rocks

Level 6 of the Dungeon
(0, 0, D:6)
  a +0 leather armour
(2, 3, D:6)
  9 gold pieces
(8, 3, D:6)
  a +0 short sword
(11, -2, D:6)
  9 sling bullets
(11, 4, D:6)
  a leopard gecko corpse

Level 7 of the Dungeon
(0, 0, D:7)
  13 gold pieces