QED

the Dungeon
(0, 0, D)
  a rat corpse
(1, 0, D)
  a rat corpse
(2, 0, D)
  a +0 dagger
  a kobold corpse
(4, 0, D)
  a giant cockroach corpse
  a rat corpse
(8, 0, D)
  an adder corpse