Don't know how to start this, but here I go...
The Codex is a magical book that tells the destiny of every living creature, correct? It also goes into some detail ("Against my better judgment, I opened the Codex last night to a random page andread about the life of a man not yet born, who would resurrect the Myrkridia and visit horrors on the world without equal in history or myth."). I'm assuming after the war with Soulblighter, Alric still had the Codex (would you give up something that valuable?), so what's stoping him from going into the Codex and looking up the entry on Mydred and reading something to the effect of "faked death so he could be next Leveller"? That said, he could look at his own entry and maybe see "became next Leveller after Balor" and figure out a way to stop the transistion. It's not like he would suffer much because the cycle might already be thrown out of whack. Besides, hes a hero, and I thought those guys did things for the greater good of man. Kill himself for the greater good of society.
Sorry, started rambling there. Just some thoughts. Hope this hasn't been mentioned before (sorry if it has).
-Josh