Efficiency

Level 4 of the Dungeon
(0, 0, D:4)
  2 poisoned darts
(0, 2, D:4)
  a poisoned dart
(0, 4, D:4)
  a poisoned dart
(3, -6, D:4)
  a poisoned dart
(8, -3, D:4)
  a potion of lignification
(13, 2, D:4)
  a scroll of magic mapping
(20, -21, D:4)
  a +0 whip of freezing (still there?)
  a +0 robe (still there?)
  the big kobold corpse of Pikel (still there?)
(21, -21, D:4)
  a giant cockroach corpse
(23, -23, D:4)
  8 gold pieces

Level 5 of the Dungeon
(0, 0, D:5)
  a scorpion corpse
(1, 0, D:5)
  a +0 giant spiked club
(12, 21, D:5)
  17 stones
(21, 1, D:5)
  a +0 robe
(41, 1, D:5)
  a water moccasin corpse
(44, 9, D:5)
  4 gold pieces

Level 6 of the Dungeon
(0, 0, D:6)
  a +0 long sword
(4, 14, D:6)
  19 stones
(27, 17, D:6)
  4 gold pieces
(33, 14, D:6)
  an adder corpse (skeletalised by now)
(37, 22, D:6)
  a +0 whip
  a +0 club
  a +0 ring mail
  a +0 dagger
  a +0 robe
  an orc corpse (skeletalised by now)
(38, 8, D:6)
  a +0 hunting sling
(38, 22, D:6)
  a +0 whip
  an orc corpse (skeletalised by now)
(38, 23, D:6)
  a +0 club
  an orc corpse (skeletalised by now)
(39, 14, D:6)
  19 gold pieces
(39, 22, D:6)
  a +0 spear (still there?)
  a gnoll corpse (skeletalised by now) (still there?)
  a gnoll corpse (skeletalised by now) (still there?)

Level 7 of the Dungeon
(0, 0, D:7)
  a +0 giant club
(8, -2, D:7)
  a +0 leather armour