Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  8 gold pieces
(5, 6, D:1)
  9 gold pieces
(7, 3, D:1)
  5 gold pieces
(9, 3, D:1)
  a +0 dagger
(14, 17, D:1)
  19 stones
(19, 10, D:1)
  25 stones
(20, 17, D:1)
  a +0 club
(21, 13, D:1)
  15 stones
(27, 29, D:1)
  10 bolts

Level 2 of the Dungeon
(0, 0, D:2)
  8 gold pieces
(3, -3, D:2)
  a rat corpse
(4, -33, D:2)
  a +0 club
(4, -22, D:2)
  a +0 dagger
  a +0 ring mail
  a +0 leather armour
  a goblin corpse
  the human corpse of Terence
(4, -19, D:2)
  a +0 club
(4, -7, D:2)
  a +0 falchion
(6, -36, D:2)
  2 stones
  a +0 dagger
(6, -33, D:2)
  a +0 dagger (still there?)
  a goblin corpse (still there?)
(20, -24, D:2)
  a bat corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 0, D:3)
  29 stones
(5, 17, D:3)
  a +0 hand axe

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 club
(2, 6, D:4)
  a +0 ring mail
  a +0 mace
  an orc corpse