Efficiency

Level 4 of the Dungeon
(0, 0, D:4)
  16 bolts
(6, -3, D:4)
  20 bolts

Level 5 of the Dungeon
(0, 0, D:5)
  a +0 rapier
(15, -2, D:5)
  14 gold pieces
(15, 0, D:5)
  15 gold pieces

Level 6 of the Dungeon
(0, 0, D:6)
  17 stones
(0, 1, D:6)
  a +0 robe