Skillful corpses: Those body parts are so far identifiable by their more specific names.
This game has many ways to exploit, and some will never be able be made 'non-exploitable', just because of the difference between turn-combat and free-movement outside of combat in combination with sneak.
Rings:
Did you find the secret stash of rings at the salamander coast?
Elf:
The elf gets turned into a silent monk, so a pawn of the enemies, that's why she attacks. Not sure if there is anyway to save her from her fate, but guess not.
