When you consider a place like Tamriel, sometimes it's best to take titles literally. Alduin is the World-Eater. It's not going to be "the end of all *life* as we know it," leaving a barren wasteland of Earthbone dirt... it's going to be the whole of Nirn inside his mighty gullet.
"None shall survive" has been a calling card for awhile, but that was only a hint to the more extensive "Nothing will survive."
Unless, of course, there's a loophole. Say, something like the someone called the Dovakhiin happening to show up..."born under uncertain stars to uncertain parents." (An aside for extra credit: what in the Aurbis makes the Prisoner such a powerful mythic figure?)
The Eight Limbs (and their Missing Ninth) have always, always made sure there was a loophole. Sometimes to their detriment, sure, but more often a hedged bet to ensure the survival of the current kalpa.
Then again:
Alduin's shadow was cast like carpetflame on east, west, south, and north...[he was] epoch eater. For as far as any man's eyes, only High Hrothgar remained above the churning coils of dragon stop.
And Alduin said, "Ho ha ho."
It's obviously happened before, so sabers sharp, and may your varliance shine bright.
Sounding suspiciously like the Nerevarine returned ... could be a Nerevarine type character - does that mean the hero's job is to ensure that some/something does survive? Will the player be that Dovakiiin? As usually happens. Or is there another role involved?
Do we get to experience the end of one kalpa, the moments/non-moments in between kalpas and the start of the new kalpa? That sounds like there might be a whole new landscape - if the dodgy man and his jumpy pal interfere again and put it all back in the wrong places - oops sorry, nice dragon, was trying to retrieve the bits and got mixed up type stuff ^^
Scary thought the hero might be the dodgy man and his jumpy pal :whistling: