Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  8 gold pieces
(7, 8, D:1)
  6 gold pieces
(7, 13, D:1)
  22 stones
(10, 3, D:1)
  a jackal corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a stone
(1, 1, D:2)
  19 arrows
(5, 4, D:2)
  a cursed +0 robe

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 club (still there?)
  a hobgoblin corpse (skeletalised by now) (still there?)
(0, 7, D:3)
  a +0 hunting sling
(3, 3, D:3)
  16 stones
(5, 3, D:3)
  a +0 leather armour (still there?)
  a +0 dagger (still there?)
(13, -12, D:3)
  a goblin corpse
(15, 4, D:3)
  an adder corpse

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 whip
(3, -11, D:4)
  a +0 trident
  a +0 leather armour
  a cursed +0 ring mail
  an orc corpse
(4, -12, D:4)
  a +0 whip
  a +0 leather armour
  an orc corpse
(8, 2, D:4)
  3 gold pieces
(9, -15, D:4)
  a +0 flail (still there?)
  a +0 chain mail (still there?)

Level 5 of the Dungeon
(0, 0, D:5)
  a +0 robe
(2, -1, D:5)
  17 stones
(11, 4, D:5)
  5 gold pieces