I think I can offer all the citations. Yet it may be better if Edgar makes a new post for the specific topic.
For Justin: I have read the entire work of Justin and I don't remember anywhere his saying that there would be eternal torments. He speaks of torments after death until the final judgmenet, which is the end of the Millenium, and then utter distruction. In his 1st Apology, he speaks of the immortality of the soul, but he doesn't say that all souls are immortal. The rest of his works shows that only the souls of the faithfull can be considered as immortal because of the kidness of God. The fate of the wicked souls is evident here:
"'But I do not say, indeed, that all souls die; for that were truly a piece of good fortune to the evil. What then? The souls of the pious remain in a better place, while those of the unjust and wicked are in a worse, waiting for the time of judgment. Thus some which have appeared worthy of God never die; but others are punished so long as God wills them to exist and to be punished.'
"'Is what you say, then, of a like nature with that which Plato in Timoeus hints about the world, when he says that it is indeed subject to decay, inasmuch as it has been created, but that it will neither be dissolved nor meet with the fate of death on account of the will of God? Does it seem to you the very same can be said of the soul, and generally of all things? For those things which exist after God, or shall at any time exist, these have the nature of decay, and are such as may be blotted out and cease to exist; for God alone is unbegotten and incorruptible, and therefore He is God, but all other things after Him are created and corruptible. For this reason souls both die and are punished […].
CHAPTER VI -- THESE THINGS WERE UNKNOWN TO PLATO AND OTHER PHILOSOPHERS.
"'It makes no matter to me,' said he, 'whether Plato or Pythagoras, or, in short, any other man held such opinions. For the truth is so; and you would perceive it from this. The soul assuredly is or has life. If, then, it is life, it would cause something else, and not itself, to live, even as motion would move something else than itself. Now, that the soul lives, no one would deny. But if it lives, it lives not as being life, but as the partaker of life; but that which partakes of anything, is different from that of which it does partake. Now the soul partakes of life, since God wills it to live. Thus, then, it will not even partake [of life] when God does not will it to live. For to live is not its attribute, as it is God's; but as a man does not live always, and the soul is not for ever conjoined with the body, since, whenever this harmony must be broken up, the soul leaves the body, and the man exists no longer; even so, whenever the soul must cease to exist, the spirit of life is removed from it, and there is no more soul, but it goes back to the place from whence it was taken.'—Dialogue with Trypho, V-VI.
Wherefore God delays causing the confusion and destruction of the whole world, by which the wicked angels and demons and men shall cease to exist, because of the seed of the Christians, who know that they are the cause of preservation in nature. Since, if it were not so, it would not have been possible for you to do these things, and to be impelled by evil spirits; but the fire of judgment would descend and utterly dissolve all things, even as formerly the flood left no one but him only with his family who is by us called Noah, and by you Deucalion, from whom again such vast numbers have sprung, some of them evil and others good. For so we say that there will be the conflagration, but not as the Stoics, according to their doctrine of all things being changed into one another, which seems most degrading.—Apology 2, VII