Nithhogg

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 robe
(4, 14, D:1)
  a +0 club
(5, 20, D:1)
  6 curare-tipped darts
(13, 34, D:1)
  a +0 club
  a +0 dagger
(19, 31, D:1)
  6 stones
(24, 24, D:1)
  a +0 leather armour
(25, 0, D:1)
  a +0 ring mail
(31, 26, D:1)
  a +0 club
(44, 19, D:1)
  a +0 dagger

Level 2 of the Dungeon
(1, -22, D:2)
  a +0 ring mail
(1, 1, D:2)
  a +0 dagger
(5, -23, D:2)
  a +0 club
(7, -20, D:2)
  a +0 dagger
  4 stones
(20, -45, D:2)
  a +0 ring mail
(23, -43, D:2)
  a +0 dagger
(23, -42, D:2)
  a +1 dagger of speed
(23, -24, D:2)
  2 stones
(34, -10, D:2)
  a +0 club
(37, -33, D:2)
  7 stones
(37, -26, D:2)
  a +0 pair of boots
(37, -11, D:2)
  a +0 flail
  a +0 scale mail
(40, -14, D:2)
  a +0 short sword
(48, -33, D:2)
  a +0 sling

Level 3 of the Dungeon
(3, -24, D:3)
  5 boomerangs
(13, -12, D:3)
  a +0 quarterstaff
(15, -15, D:3)
  a +0 leather armour
(20, -13, D:3)
  a +0 ring mail
  6 stones
(20, -4, D:3)
  3 stones
(24, -1, D:3)
  a +0 leather armour
(28, 0, D:3)
  a +0 shortbow
(30, -20, D:3)
  the staff of fire "Hysaoheg" {rF+ rN+ Int+3 Dex-4}
    [staff of fire]
    
    Base accuracy: +5  Base damage: 5  Base attack delay: 1.2
    This weapon's minimum attack delay (0.6) is reached at skill level 12.
    
    It falls into the 'Staves' category. It is a one-handed weapon.
(31, -16, D:3)
  a stone
(32, -20, D:3)
  a +0 dagger
(37, -21, D:3)
  a +0 dagger

Level 4 of the Dungeon
(0, 0, D:4)
  a black bear corpse
(4, -15, D:4)
  a +0 club
(4, -14, D:4)
  a +0 short sword
(6, -15, D:4)
  2 poisoned darts
  a +0 vampiric short sword
(10, -9, D:4)
  a +0 chain mail
(17, -17, D:4)
  a +0 dagger
(18, -19, D:4)
  a +0 hand axe
  2 poisoned darts
  a +0 club
(18, -18, D:4)
  a +0 leather armour
  a +0 dagger
(18, -17, D:4)
  a +0 giant club
(19, -20, D:4)
  a +0 trident
(19, -19, D:4)
  a +0 hand axe
(20, -29, D:4)
  a +0 ring mail
(21, 0, D:4)
  a +0 robe
(24, 3, D:4)
  a +0 dagger
  a kobold corpse
(27, -1, D:4)
  a scroll of teleportation
(27, 0, D:4)
  7 stones
(27, 1, D:4)
  12 gold pieces
(30, 1, D:4)
  a +0 short sword
  a giant cockroach corpse
(31, 2, D:4)
  a +0 flail
  a +0 scale mail
  an orc corpse
(31, 5, D:4)
  a +3 short sword of venom
  a +0 ring mail
(35, 9, D:4)
  a stone
(36, 4, D:4)
  a potion of lignification