Nothing too difficult. Turn 1 positioning is probably the most important part of the map. Soren needs to bait from the right of the water to avoid getting double teamed by the red mage and the bow cav.
It's actually pretty helpful that the bow cav has guard since it keeps Soren from proccing his AoE on the sword flier. He needs he AoE to take out Myrrh.
Not too many enemies to deal with. Just a bit of positioning to keep everyone out of range on enemy phase since there's not much moving room at the top.