Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a bat corpse
(2, -12, D:1)
  12 gold pieces
(2, -6, D:1)
  a giant cockroach corpse
(11, 3, D:1)
  a rat corpse
(16, -36, D:1)
  a +0 dagger
(18, -33, D:1)
  a rat corpse
  a jackal corpse

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(1, 0, D:2)
  a +0 club (still there?)
  a goblin corpse (still there?)
(1, 1, D:2)
  a frilled lizard corpse
(12, -3, D:2)
  a +0 club (still there?)
  a goblin corpse (still there?)
(14, -5, D:2)
  a rat corpse
(15, 0, D:2)
  a +0 hunting sling
(18, -6, D:2)
  2 stones (still there?)
  a +0 club (still there?)