You've defeted Vana, but he's not done yet. He attacks Haven with his armies you have to fight you way through slags and shadow fire, when you get past all of them Vana returns, as a firey ghost same attacks as regular vana, but only elemental and shadow attacks will affect Ghost Vana, instead of mask phases Vana morphs into several undead defeat all of them to move on.
This will be improved
Is this not enough?