If Rowan was smart this game would have been like 2 minutes long. Because let's face it, solo infiltration into a castle with demons who wield unknown magic power was a suicide mission. He would have gone to the capital and gotten some non hostile nobles to support him and they'd have been ready for the twin's bumbling attack on the capital. Sure he would have to give up on Alexia's survival but her being alive at that point was unlikely anyways.