Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  17 stones
(6, 10, D:1)
  a rat corpse
(8, 15, D:1)
  a +0 robe
(10, 11, D:1)
  a quokka corpse
(12, 5, D:1)
  a +0 robe
(19, 10, D:1)
  a +0 leather armour
(27, 12, D:1)
  a +0 robe

Level 2 of the Dungeon
(0, 0, D:2)
  24 sling bullets
(16, 11, D:2)
  a ball python corpse
(19, 19, D:2)
  a scroll of enchant weapon
(22, 26, D:2)
  a +0 ring mail