Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  4 stones
  a kobold corpse
(0, 1, D:1)
  a kobold corpse
  a rat corpse
(0, 2, D:1)
  2 stones
(0, 3, D:1)
  a stone
(0, 5, D:1)
  a hobgoblin corpse
(0, 7, D:1)
  a stone
(1, -3, D:1)
  a stone
(1, -1, D:1)
  a stone
(17, -1, D:1)
  a +0 ring mail
(17, 14, D:1)
  a cursed -2 hand axe
(18, -2, D:1)
  a +0 club
(18, 14, D:1)
  14 stones
(20, 5, D:1)
  9 gold pieces
(24, 4, D:1)
  a +0 dagger (still there?)
  a goblin corpse (still there?)

Level 2 of the Dungeon
(0, 0, D:2)
  a leopard gecko corpse

Level 3 of the Dungeon
(0, 0, D:3)
  14 gold pieces

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 spear
(1, 0, D:4)
  27 sling bullets