How does salvation of people with dissociative identity disorder work?

Let's say that someone with DID (dissociative identity disorder) has 2 alters: an atheist and a faithful Christian. Where would that person go? To Heaven? To Hell? To some third place? This question is pretty important as it is estimated that 1.5% of the global population (or 121 million people) suffer from DID, many of whom are faithful Christians.