Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a giant cockroach corpse
(3, 6, D:1)
  12 gold pieces

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 robe
(1, 4, D:2)
  a +0 leather armour
(5, -1, D:2)
  a +0 whip
  a stone
(5, 6, D:2)
  13 arrows
(7, 1, D:2)
  a stone
(8, -4, D:2)
  13 gold pieces
(9, 0, D:2)
  12 gold pieces
(11, 3, D:2)
  a +0 leather armour

Level 3 of the Dungeon
(0, 0, D:3)
  7 gold pieces
(3, -3, D:3)
  a +0 flail
(4, -4, D:3)
  28 bolts
(4, 2, D:3)
  17 stones
(8, 9, D:3)
  5 gold pieces
(10, 3, D:3)
  a goblin corpse