Eternal Damnation is a unique Agate Amulet. Amulets.
Requires Level 52.
Flavour Text: The price of immortality is isolation.
This amulet offers a powerful way to gain additional Elemental mitigation by introducing the concept of Elemental damage reduction.
Despite the drawback of reducing your maximum resistances if you have sufficient chaos resistance. This is more than compensated for, because of the roguelike nature of the Forbidden sanctum.
Defeating the boss of a floor is a difficult achievement and hence rewards a lot of experience. You may fail on the way so if you do manage. It expects a good experience boost for your achievement.