Although we haven't yet approached the "morale" system of the creatures during the development, still many of them learnt to flee in panic
when overwhelmed by your hordes of the undead. Sometimes these "deserters" run onto the other groups of hostile mobs, joining forces against you in the next encounter – it's pretty surprising and fun when it happens. But sometimes, instead of running to their allies, they can bump into their own enemies – yes, we have implemented the faction system that will sometimes allow you to pit your opponents against each other. Now we think about making this panic system to calculate that the mob should run to his allies instead of retreating in random directions.