Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  a +0 falchion

Level 6 of the Dungeon
(0, 1, D:6)
  15 arrows
(5, 8, D:6)
  a +0 club
(8, 4, D:6)
  15 gold pieces
(13, 5, D:6)
  a +0 chain mail