Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  17 sling bullets
(32, 13, D:1)
  a +0 robe
(37, 16, D:1)
  9 gold pieces

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 ring mail
(5, -26, D:2)
  a leopard gecko corpse
(5, 3, D:2)
  a bat corpse

Level 3 of the Dungeon
(0, 0, D:3)
  9 gold pieces
(8, 5, D:3)
  a rat corpse
(10, 5, D:3)
  a quokka corpse
(12, -9, D:3)
  a +0 whip
(14, -20, D:3)
  a +0 hunting sling
(17, 7, D:3)
  8 gold pieces
(18, 8, D:3)
  12 gold pieces
(21, -15, D:3)
  a +0 whip

Level 4 of the Dungeon
(0, 0, D:4)
  a jackal corpse
(37, -14, D:4)
  a +1 flail of protection (still there?)
  a +0 ring mail (still there?)
  a potion of flight (still there?)
(40, -13, D:4)
  17 gold pieces

Level 5 of the Dungeon
(0, 0, D:5)
  a kobold corpse
(1, 0, D:5)
  a hound corpse
(2, 5, D:5)
  13 gold pieces