Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 robe
(7, -7, D:1)
  a +0 spear
(7, 7, D:1)
  10 gold pieces
(25, -32, D:1)
  7 gold pieces
(25, -25, D:1)
  16 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 scale mail
(8, 5, D:2)
  a stone
  a +0 whip
  a kobold corpse
(12, 0, D:2)
  a +0 dagger
(17, 9, D:2)
  a leopard gecko corpse
(17, 17, D:2)
  4 gold pieces
(41, 19, D:2)
  a +0 ring mail
(47, 12, D:2)
  a goblin corpse

Level 3 of the Dungeon
(0, 0, D:3)
  a goblin corpse
  a bat corpse
(0, 2, D:3)
  a +0 spear
(4, 18, D:3)
  a +0 short sword