Favourite Action Leveling/Progression stories

People can be granted a class by 'God' and this determines their entire faith in life. The protagonist (male) gets the Dark Mage class which is looked down on as it has evil attributes. He levels to max level, LV. 999 and joins the hero party to defeat the Demon King, but is betrayed and killed by his own party members. He wakes up to another chance at his life, 5 years before his death, however, he still has the memories of his past life and his class and levels.