The secret to having an easy clear is to send all 15 units to the bottom right. That way, no enemies go north, and you don’t have to worry about the castle being captured!
For this playthrough, my party was significantly weaker in terms of the number of tier 3 units I had, but the result was better than my original attempt as I had 5 fully healthy units by the battle’s end.
For More Symphony of War: The Nephilim Saga Videos, Check the Playlist: https://www.youtube.com/playlist?list=PLnRMVcUfWyPtSlQlngZ-NzgiwXGQyj54A
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You are a madlad, well done mate.
Man how the hell do you have all these units at that point in the game?