Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(1, -3, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a rat corpse

Level 3 of the Dungeon
(0, 0, D:3)
  13 gold pieces
(6, -3, D:3)
  20 arrows

Level 4 of the Dungeon
(0, 0, D:4)
  20 sling bullets
(4, 8, D:4)
  a +0 whip