To those who compare it to Darkest Dungeon from the art are inherent ignorant of plain haters.
The game is not turn-based, there's no hero party and not "mental breakdown" shenanigans. It's a RTS with one side-3 lane tactical combat, where knowing how to deploy, charge and defend is key, or like Clausewitz said "to control the rhythm of battle".
It's a story of a knight cursed by a demonic resurrection who seeks vengeance for the fall of his noble house, so he gathers a little army to face Vlad and the Emperor (the leaders of both warring states) to fulfill his ambition.