Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  28 arrows
(6, -12, D:1)
  a bat corpse
(17, 2, D:1)
  5 gold pieces
(17, 4, D:1)
  22 stones
(18, -4, D:1)
  15 gold pieces
(28, -1, D:1)
  a giant cockroach corpse
(31, -9, D:1)
  11 gold pieces
(35, -12, D:1)
  a +0 robe
(38, -14, D:1)
  a scroll of identify
(44, -12, D:1)
  a potion of heal wounds

Level 2 of the Dungeon
(0, 0, D:2)
  a cursed -3 club
(2, -14, D:2)
  a giant cockroach corpse
(12, 0, D:2)
  a hobgoblin corpse