Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a goblin corpse (skeletalised by now)
(0, 7, D:1)
  a bat corpse (skeletalised by now)
(6, -2, D:1)
  a +0 dagger
(16, 11, D:1)
  a +0 club (still there?)
  a leopard gecko corpse (still there?)
(26, 18, D:1)
  a +0 short sword
  a kobold corpse
(26, 19, D:1)
  a kobold corpse
(27, 19, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club (still there?)
  a kobold corpse (still there?)
(0, 5, D:2)
  13 gold pieces
(3, -7, D:2)
  an adder corpse
(4, 2, D:2)
  5 gold pieces
(27, -7, D:2)
  a +0 scale mail
(27, 12, D:2)
  7 silver javelins
(28, -7, D:2)
  a +0 hand axe
(29, 11, D:2)
  11 stones
(30, 3, D:2)
  19 bolts
(30, 11, D:2)
  14 bolts

Level 4 of the Dungeon
(0, 0, D:4)
  13 bolts
(5, 1, D:4)
  a giant cockroach corpse
(6, 9, D:4)
  the +4 mace "Qulomish" {drain, *Corrode rF++ rN+ SInv}
    A truly terrible weapon, it drains the life of those it strikes.
    
    It greatly protects you from fire.
    It protects you from negative energy.
    It lets you see invisible.
    It may corrode you when you take damage.
(7, 5, D:4)
  10 gold pieces
(10, 4, D:4)
  8 gold pieces
(11, 1, D:4)
  6 gold pieces
(11, 2, D:4)
  14 gold pieces
(12, 1, D:4)
  18 gold pieces