Ziggurat quietly changed the information on the store page and removed DirectX 11 from the minimal system requirements, because it's not actually supported at the moment.

Be careful and refrain from buying the game if you still have an old / integrated GPU that doesn't support DirectX 12.

Thanks for the warning! One would not expect a 2D game to demand DX12.

So, 'vendor-lock' again. Thank you. Will not buy this game.