Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  10 gold pieces

Level 3 of the Dungeon
(0, 0, D:3)
  a scroll of fear
(1, -2, D:3)
  a potion of might
(6, -1, D:3)
  a +0 ring mail

Level 4 of the Dungeon
(10, 1, D:4)
  24 sling bullets
(12, 2, D:4)
  7 javelins

Level 5 of the Dungeon
(0, 0, D:5)
  an arrow
(4, 7, D:5)
  a scroll of teleportation
(7, 0, D:5)
  12 gold pieces
(7, 1, D:5)
  a +0 short sword
(20, 20, D:5)
  20 bolts

Level 6 of the Dungeon
(6, 10, D:6)
  15 stones
(18, 9, D:6)
  a scroll of enchant weapon
(19, 42, D:6)
  13 stones
(24, 36, D:6)
  a gnoll corpse (skeletalised by now)
(33, 42, D:6)
  a +0 spear
(35, 25, D:6)
  a +0 whip (still there?)
  a +0 ring mail (still there?)
(39, 25, D:6)
  a +0 scale mail
(40, 24, D:6)
  6 silver javelins
(41, 3, D:6)
  a +0 dagger
  a +0 leather armour
  an orc corpse
(41, 4, D:6)
  a +0 mace
  a cursed ring of attention
  an orc corpse
(41, 5, D:6)
  a +0 leather armour
  a +0 dagger
  a +0 ring mail
  an orc corpse
(44, 10, D:6)
  18 arrows
(45, 8, D:6)
  a +0 robe

Level 7 of the Dungeon
(0, 0, D:7)
  6 gold pieces
(4, 0, D:7)
  a +0 robe