Niddhogr

Level 1 of the Dungeon
(4, -20, D:1)
  a potion of degeneration
(5, -3, D:1)
  a +0 whip
(7, -11, D:1)
  a +0 dagger
(14, 11, D:1)
  a +0 dagger
(16, -28, D:1)
  a cursed -1 dagger
(17, 6, D:1)
  a +0 whip
(24, 14, D:1)
  a +0 club
(29, -26, D:1)
  a +0 hand axe
(32, -13, D:1)
  a +0 short sword
(32, -11, D:1)
  a +0 club
(35, 3, D:1)
  a +0 club
(38, -19, D:1)
  a +0 dagger
(40, -25, D:1)
  183 bolts
(45, -24, D:1)
  a +0 dagger
(48, -8, D:1)
  a potion of degeneration

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 mace
(6, -6, D:2)
  a +0 leather armour
(11, -5, D:2)
  a +0 club
(21, 2, D:2)
  a +0 robe
(23, 5, D:2)
  a +0 whip
(24, 20, D:2)
  a cursed +0 flail
(35, 24, D:2)
  a cursed -3 short sword
  a +0 whip
(43, 11, D:2)
  121 stones
(44, 35, D:2)
  2 potions of degeneration {!q}
(45, -3, D:2)
  a +0 club
(45, 8, D:2)
  a cursed -2 robe
(45, 14, D:2)
  a +0 club
(45, 18, D:2)
  a +0 club
  214 bolts
(48, 33, D:2)
  a +0 ring mail
(49, 37, D:2)
  a +0 falchion
  a +0 chain mail
(51, -1, D:2)
  a cursed -2 robe
(52, 41, D:2)
  a +0 whip

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 quarterstaff
(4, -29, D:3)
  a +0 club
  a +0 club
(17, -30, D:3)
  a cursed -1 whip
(22, -29, D:3)
  a +0 robe
(23, -40, D:3)
  76 stones
  a +0 club
  a +0 mace
(25, -40, D:3)
  a stone
(26, -24, D:3)
  a +0 robe
(26, -12, D:3)
  a +0 dagger
(28, -22, D:3)
  a +0 robe
  a +0 dagger
(28, -7, D:3)
  a +0 war axe
(29, -52, D:3)
  a +0 hunting sling
  207 sling bullets
(30, -21, D:3)
  a +0 robe
  a +0 dagger
(30, -14, D:3)
  a +0 spear
  a cursed -2 club
  a +0 leather armour
(38, -18, D:3)
  a +0 dagger
  a +0 robe
  a +0 whip
(42, -57, D:3)
  a +0 dagger
(42, -43, D:3)
  a +0 cloak
(44, -57, D:3)
  a cursed +0 dagger
(44, -49, D:3)
  a +0 falchion
(46, -49, D:3)
  a +0 dagger
  a +0 robe
(46, -12, D:3)
  183 bolts
(47, -49, D:3)
  a +0 dagger
  a +0 scale mail
(48, -46, D:3)
  a +0 hand axe
(51, -50, D:3)
  a +0 hunting sling
  178 stones
(51, -49, D:3)
  a +0 hunting sling
  126 stones
(52, -61, D:3)
  a +0 hunting sling
  162 stones
(55, -57, D:3)
  a +0 club
  a +0 hunting sling
  156 stones
(57, -19, D:3)
  a +0 robe
(58, -52, D:3)
  103 stones
(62, -52, D:3)
  a +0 hand axe
(63, -50, D:3)
  179 bolts
(63, -49, D:3)
  a +0 ring mail
(63, -48, D:3)
  a +0 chain mail

Level 4 of the Dungeon
(0, 0, D:4)
  14 gold pieces
  (unseen)
(2, 6, D:4)
  a +0 robe
(14, 15, D:4)
  276 sling bullets
(19, 21, D:4)
  a +0 hand axe
  a +0 leather armour
  an orc corpse
(19, 22, D:4)
  a +0 robe
  an orc skeleton
(29, 3, D:4)
  a cursed -2 hand axe
  a +0 leather armour
(29, 4, D:4)
  a +0 hand axe
(31, 4, D:4)
  a +0 club
(33, 4, D:4)
  a +0 whip
  (unseen)