Absolution is given by mail system from Vulgrim after you start a + Game.
|“|| Absalom never spoke of where he acquired his axe, Absolution, but there is no doubt that it is no common tool of war. Absolution channels the righteous fury of its wielder into powerful blasts that slow enemies and knock nearby foes away. |
— In-Game Description, Darksiders II
Absolution is a powerful axe obtainable in Darksiders 2 and was once the personal weapon of Absalom. It later came into the possession of the Horseman Death following the corrupted Nephilim's demise. In combat, it slows enemies down.