Stealth Moose
Umbrella Elite
Originally posted by ares834
Yes, but it was only at the end that the Exile talked him into letting go of his rage and thus die. Prior to that he was still clinging on to his rage and therefore was capable of reviving himself albeit with more and more difficulty.
Final Fight Video for Reference
~1:50, Sion proclaims this:
"As long as the dark places of this world flow through the cracks of my flesh, I cannot be killed".
This is the first interlude, and prior to this Sion has not shown any signs of fatigue, weakness, or anything else related. The Exile is given a dialogue choice, and then combat resumes.
~2:53, Sion states this:
"You are strong... as strong as I had believed. But she knows you cannot defeat me." He then turns his saber off and says: "Surrender now, return to the surface of Malachor... do not force me to destroy you." This is perhaps the third time already he has implored the Exile to not die at his hand, including the prefight discussion. The Exile is given another dialogue choice, to further weaken his resolve, to which he replies and she is then given yet another dialogue choice, and then after Sion replies a third choice is allowed.
Here is a gem from Sion's last reply:
"If you go before her, you will be broken. If killing you will spare you what lies ahead, then kill you I must..."
The fight resumes.
Slightly related, Sion uses Force Drain in combat. While it is a game mechanic style feat, it does have some lore basis.
~5:17, dialogue resumes. Sion seems resigned to dying, and is more receptive to the Exile's words. Sion is mechanically weakened via the dialogue choice.
At some point, he says this:
"I can die a hundred times, Exile, and still I will rise again, as strong as before."
Combat then resumes.
~6:30, Sion actually stumbles, and is assumed knocked down or possibly fatally wounded. He then stands up again and proclaims:
"I will not fall. I can not die."
The Exile is given another dialogue choice. Based on the choice, Sion seems to feel despair, which weakens him and he falls to his knees again. The Exile is able to coerce him fully at this point, and he remains weakened, vulnerable. At one point, he says this regarding Kreia:
"Her weakness... is you. As you were mine. I will glad to leave this place... at last."
Then he makes the conscious decision to die.
So yeah, it's all plot-induced here. His emotional attachment to the Exile is explicitly his weakness here, otherwise he seems very capable of reviving as often as is needed. His bones are fractured thousands of times, his skin is held together as it decays, and by all rights he is clinically dead.