Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  18 sling bullets
(1, 0, D:5)
  17 stones
(1, 6, D:5)
  11 gold pieces
(2, -2, D:5)
  a scroll of magic mapping
(3, 4, D:5)
  a +0 leather armour

Level 6 of the Dungeon
(0, 0, D:6)
  22 gold pieces