Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a cursed -2 leather armour
(9, 36, D:1)
  25 stones
(35, 25, D:1)
  12 stones

Level 2 of the Dungeon
(0, 0, D:2)
  10 gold pieces
(10, 17, D:2)
  13 gold pieces
(14, 19, D:2)
  30 arrows
(43, 10, D:2)
  8 gold pieces
(46, 18, D:2)
  a +0 short sword
(50, 18, D:2)
  a +0 spear

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 trident
(8, 0, D:3)
  a +0 short sword (still there?)
  an orc corpse (skeletalised by now) (still there?)
(10, 0, D:3)
  a poisoned dart
(10, 7, D:3)
  a poisoned dart
(10, 8, D:3)
  a poisoned dart (still there?)
  a +0 dagger (still there?)
(11, 1, D:3)
  a poisoned dart
(12, 8, D:3)
  a +0 mace
  (unseen)
(16, 24, D:3)
  a +0 scale mail
(16, 26, D:3)
  a stone
(18, 28, D:3)
  a stone
(20, 12, D:3)
  a +0 short sword

Level 4 of the Dungeon
(30, -10, D:4)
  a +0 spear
(34, -6, D:4)
  a +0 dagger
(38, -9, D:4)
  20 stones
(46, 14, D:4)
  10 gold pieces
(46, 19, D:4)
  a +0 ring mail
(48, 6, D:4)
  an adder corpse (skeletalised by now)
(50, 19, D:4)
  an adder corpse
(52, 6, D:4)
  a +0 scale mail of cold resistance
(52, 20, D:4)
  18 stones
(57, 22, D:4)
  23 stones
(59, -15, D:4)
  a leopard gecko corpse

Level 5 of the Dungeon
(0, 0, D:5)
  a +0 mace
(25, 34, D:5)
  6 arrows
(26, 38, D:5)
  a +0 robe
  a cursed -3 dagger
  an orc corpse
(26, 39, D:5)
  a +0 robe
  a +0 dagger
  a +0 robe
  a +0 dagger
  a +0 robe
  a +0 dagger
  an orc corpse
  an orc corpse
(33, 26, D:5)
  a frilled lizard corpse
(39, 4, D:5)
  24 stones
(42, 15, D:5)
  a ball python corpse

Level 6 of the Dungeon
(0, 0, D:6)
  a poisoned dart
(2, -2, D:6)
  a poisoned dart
(7, 1, D:6)
  an adder corpse
(7, 2, D:6)
  a +0 hand axe (still there?)
  a +0 dagger (still there?)
  a +0 robe (still there?)
  an orc corpse (still there?)
(8, 4, D:6)
  a scroll of blinking
(9, 2, D:6)
  a +2 dagger of venom (still there?)
  a +0 robe (still there?)
  an orc corpse (still there?)