Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 leather armour
(7, 14, D:1)
  a +0 club

Level 2 of the Dungeon
(0, 0, D:2)
  5 gold pieces
(10, 15, D:2)
  a +0 club
(11, 15, D:2)
  a rat corpse
(18, 7, D:2)
  a hobgoblin corpse

Level 3 of the Dungeon
(0, 0, D:3)
  a scroll of noise
(3, -14, D:3)
  14 stones
(6, -9, D:3)
  a stone
(8, -7, D:3)
  a +0 club (still there?)
  an orc corpse (still there?)
(8, -3, D:3)
  21 sling bullets
(11, -17, D:3)
  a +0 ring mail
(13, -15, D:3)
  19 gold pieces