snake

Level 1 of the Dungeon
(0, 0, D:1)
  a rat skeleton
(1, 0, D:1)
  a +0 dagger
  a kobold skeleton
(2, 0, D:1)
  a +0 club
(2, 1, D:1)
  a +0 short sword
  5 stones
  a kobold skeleton
(3, 0, D:1)
  a +1 flail of venom
(4, -1, D:1)
  a rat skeleton
(12, -12, D:1)
  a jackal skeleton
(19, 23, D:1)
  a +0 sling
(21, -20, D:1)
  a rat corpse (skeletalised by now)
(22, 24, D:1)
  a bat skeleton
(24, 14, D:1)
  a +0 ring mail
(26, 20, D:1)
  a +0 whip
  a ball python skeleton
(27, 20, D:1)
  a +0 club
  4 stones
(32, -16, D:1)
  a +0 plate armour
(32, 28, D:1)
  a rat corpse (skeletalised by now)
(47, -12, D:1)
  a +0 mace
(51, -3, D:1)
  a hobgoblin corpse (skeletalised by now)
(56, -15, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(56, 13, D:1)
  a +0 ring mail
(60, 18, D:1)
  a bat corpse (skeletalised by now)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 robe
(4, -25, D:2)
  a +0 robe
(16, 3, D:2)
  an adder skeleton
(23, -34, D:2)
  a +0 quarterstaff
(30, -29, D:2)
  a +0 dagger
(31, 11, D:2)
  a +0 dagger of electrocution
(36, -7, D:2)
  a +0 whip
(42, -33, D:2)
  a +0 dagger
  a +0 sling
(42, -32, D:2)
  a hobgoblin skeleton
(42, -31, D:2)
  a bat skeleton
(46, -3, D:2)
  a quokka corpse (skeletalised by now)
(49, -38, D:2)
  a +0 mace
(53, -5, D:2)
  a +0 scale mail

Level 3 of the Dungeon
[Shop] Niycocs's Book Shoppe
  Great Wizards, Vol. VII (420 gold)
  a book of Duality (644 gold)
  a book of Misfortune (700 gold)
  a There-And-Back Book (504 gold)
  a manual of Earth Magic (1120 gold)
  a book of Debilitation (308 gold)
  a book of Burglary (308 gold)
  a book of Power (756 gold)
  My Sojourn through Swampland (336 gold)
(1, -9, D:3)
  an adder corpse
(3, -18, D:3)
  an adder corpse
(4, -18, D:3)
  a rat corpse
(10, 9, D:3)
  a hobgoblin corpse
(14, 9, D:3)
  an adder corpse