On the final map there is a door that separates the two halves of the map. I played Whirlwind which moved some of the creatures from one side of the door to the other. Unfortunately, I found out the hard way that the creatures could freely pass through the door, unlike my party members. Would like to suggest that perhaps all creatures be constrained to whatever side of the door they are currently on until the door is destroyed.
The Door is considered an enemy unit, therefore, it behaves as an enemy unit; it is blocking terrain to enemies and does not disturbs allies
