There is another way their destruction could be credited:
Five destroyed by his Basilisk's poison: the diary, the cup, and after being absorbed by the by sword, the ring, locket and finally the other snake.
One by his Death Eater Crabbe's son's spell.
One (and the final LV part as well) by LV himself.
Thus LV was killed by a favorite pet, his dumbest supporter, and two doses of personal stupidity. Use that as his epitaph!
A very good summary!