[Afrodal Fenyar]

There are actually only two possibilities, Húrin Thalion and Túrin Turambar. Nothing done by Aragorn is anything compared to them.

Beren of course stole the Silmaril from the Crown of Morgoth, but actually it was all done by Lúthien. Beren done almost nothing, except got caught up by Sauron.

Húrin was a great warrior. Remember his deeds when he defended Turgon. When everybody else were slain, he still fought and believed that Morgoth will face his end. Even though the Orcs would have been trying to kill him, I don't think they could have done that much sooner. I think that Gothmog would have met his end much sooner, if fought with Húrin.

And after taken to Angband, he defied Morgoth for 28 years, spat on his face, and I think would have lasted even longer, if would not have been released. As somebody said, there was no escape for Húrin, for he couldn't move or even die, so it was an eternal doom. But I think Húrin would have given up anyways. He defied the Greatest of the Beings of Arda. It was no small deed.

I don't think that many elf could have done better.

Túrin was the second choise. But unlike his father he really feared Morgoth and his doom, and instead of facing his destiny he ran from it. Anyways he did great job in killing Glaurung, though like a thief, without even giving Glaurung a chance. Húrin would have faced Glaurung on open. That would probably have been his doom, though. But the destiny of Túrin - to slay Morgoth in Dagor Dagorath was great, and gives him more points.

But still I must say that it's Húrin Thalion. The Greatest of the Warriors of Men, and I think, also the Greatest of Men.