Spread carnage and corruption!
Henzell says...
  1. You start off surrounded by a ring of 24 {vault guard}s a couple of spaces away. Also scattered throughout the level are many of the game's tougher enemies; be prepared for all sorts of nasty dragons, giants and liches. Have fun!
  2. Here is what will happen to you here: a vault warden will lock the stairs, or a tentacled monstrosity will constrict you, and you will die.
  3. If you're unfamiliar, and opposed to magic mapping: in the cardinal directions are hallways that lead to the level's square perimeter; diagonally from the start, there are 4 vaults of varying difficulty, one of which contains the silver rune, and all of which contain nasty bad guys and probably-decent loot.
  4. You can't go here until after you've gone to vaults:4.

Information based on master branch and the great LearnDB.
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