Board Thread:Off Topic/@comment-25076409-20140712184109/@comment-1470368-20140714225516

The question's really void. :P

At the end, Alduin doesn't actually ''"die". ''His Soul isn't even absorbed by the Dragonborn (not that it can be anyway).

Alduin will eventually return to Tamriel one day to fulfill his intended purpose after being created by Akatosh. There will be no Dragonborn to stop him then (as the Dragonborn in TESV is the LAST Dragonborn of the current Kalpa, assuming there will be anymore in the next).