Niddhogr

Level 1 of the Dungeon
(0, 0, D:1)
  16 poisoned needles
(3, 7, D:1)
  a +0 short sword
(17, 35, D:1)
  a +0 club
(22, 17, D:1)
  a stone
(22, 21, D:1)
  2 stones
(22, 23, D:1)
  a +0 short sword
(23, 36, D:1)
  18 stones
(25, 1, D:1)
  a cursed +0 spear
(28, 7, D:1)
  a +0 spear
(33, 31, D:1)
  a +0 mace
(34, 21, D:1)
  a +0 dagger of venom
(35, 21, D:1)
  a stone
(36, 32, D:1)
  a +0 robe
(37, 22, D:1)
  a stone
(49, 28, D:1)
  a +0 club
(49, 34, D:1)
  20 stones
(50, 15, D:1)
  a +0 leather armour
(52, 7, D:1)
  a +0 dagger
(55, 24, D:1)
  21 bolts
(59, 17, D:1)
  2 stones
(60, 17, D:1)
  a +0 club
(61, 17, D:1)
  2 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a bat corpse (skeletalised by now)
(9, 2, D:2)
  24 arrows
(10, 18, D:2)
  a +0 chain mail
(12, -2, D:2)
  a +0 chain mail
(18, 0, D:2)
  a +0 halberd
  a +0 halberd
(19, -1, D:2)
  a +0 club
(20, -11, D:2)
  a +0 dagger
(23, 11, D:2)
  a stone
(25, 11, D:2)
  a cursed -3 dagger
  3 stones
(26, 4, D:2)
  a +0 short sword
(33, -30, D:2)
  a +0 ring mail
(45, -11, D:2)
  6 stones
(48, -15, D:2)
  a +0 flail

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 dagger
(3, 1, D:3)
  a +0 dagger
(23, 10, D:3)
  a potion of mutation