Subjective: The following part of this article is based upon the editor's personal experiences and opinions, and therefore may not be applicable for all readers.
There are a large number of enemies on this map. As the victory conditions are to defeat the enemy, only Hubert and the Death Knight need to be taken down to win the battle. Player units are split across two sections: the south and the north-west. This allows you to move in on the Death Knight in a pincer movement, but if you have Lysithea placed in the south she can very quickly move forward and take out the Death Knight in one hit. The Flying Beasts in this level can do significant damage to weaker units, so unless you need their Umbral Steel it is a good idea to steer clear of them. Hubert can attack from a significant distance, so if you want to deal with him quickly make sure you have mounted units to approach him.