I have no problem saying that an atheist who dies in his atheism faces an eternal judgment in hell. In fact, it's almost a tautology. Hell is by definition a place where God is excluded by an alien will. God is excluded, therefore love, therefore the source of life and light, therefore all truth, goodness and beauty --- it's all excluded by a perverse obstinacy.
That's hell.
There are people walking this same earth with us who live in torment in a hell of horrors already within the confines of their minds. They have not "lost" their way. They have rejected the Way.