King Diamond
Literate
Zeth doesn't need to fall to unlock the breakthrough ending, you only need to let medusa stay alive until turn 5, after that try to kill all the Dark Lords you can if Warg appears and you don't have the cards to fight her don't worry because she doesn't appear in the final boss rush when you unlock breakthrough ending. And Remember to get all the healers you can obtain because in the boss rush there is no healing points until the end when you fight Kayblis.