Efficiency

Level 3 of the Dungeon
(8, 11, D:3)
  a +0 leather armour

Level 5 of the Dungeon
(0, 0, D:5)
  12 gold pieces
(8, 1, D:5)
  a worker ant corpse
(9, -2, D:5)
  5 poisoned darts
(17, -8, D:5)
  a +0 ring mail

Level 6 of the Dungeon
(0, 0, D:6)
  a poisoned dart
(0, 1, D:6)
  a +0 whip
(1, 2, D:6)
  a +0 hand axe