as to perma death in 2nd edition rules
Finger of Death, Death spell, Disintergration, petrification (then shattering the statue)
finger of Death and Death spell destroy the soul so no good, but there is a way to turn them into powerful zombies Juju Zombies I think

and well, getting turned into Dust kinda means no body (dunno if wish would work, I'm unsure as to how powerful that spell actually is)
and as for getting turned into stone, then getting shattered, guess you could use a wish spell for that
oh, and not sure where I read it (or if I dreamed it) but I think that a long dead corpse can be returned to life via ressurection, but I think that what it is is that for every year dead it costs a level in xp to do (so if dead 100 years you gotta be at least 101 to ress them)