Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 leather armour

Level 2 of the Dungeon
(0, 0, D:2)
  13 bolts

Level 3 of the Dungeon
(0, 0, D:3)
  8 gold pieces
(3, 2, D:3)
  a hobgoblin corpse (skeletalised by now)
(7, -20, D:3)
  a +0 dagger
(15, 4, D:3)
  a +0 mace (still there?)
  an orc corpse (skeletalised by now) (still there?)
(16, 3, D:3)
  15 stones
(16, 5, D:3)
  a +0 club (still there?)
  a goblin corpse (skeletalised by now) (still there?)
(24, 5, D:3)
  a +0 hand axe
(33, -3, D:3)
  a There-And-Back Book
(35, -21, D:3)
  12 stones
(35, -2, D:3)
  a rat corpse
(45, -20, D:3)
  a +0 flail
  a +0 club
  a +0 leather armour
  a +0 club
  a +0 leather armour
  a +0 short sword
  a +0 club
  an orc corpse
(45, 13, D:3)
  a +0 chain mail
(48, 18, D:3)
  a +0 mace
(51, 16, D:3)
  a +0 leather armour
(52, 1, D:3)
  15 sling bullets
(52, 3, D:3)
  a bat corpse
(52, 16, D:3)
  a frilled lizard corpse

Level 4 of the Dungeon
(2, -4, D:4)
  a +0 club (still there?)
  a goblin corpse (still there?)
(13, 35, D:4)
  6 gold pieces