Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a hobgoblin corpse

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 hand axe
(32, -1, D:2)
  6 gold pieces
(41, 31, D:2)
  8 gold pieces

Level 3 of the Dungeon
(0, 0, D:3)
  a stone
(2, -3, D:3)
  a stone
(3, -4, D:3)
  a stone
(5, -2, D:3)
  a +0 club
(22, -7, D:3)
  13 stones
(24, -3, D:3)
  a +0 club
  a goblin corpse

Level 4 of the Dungeon
(0, 1, D:4)
  8 gold pieces