wILL DO THANKS, regarding PEFs how do they work?
Sorry I missed this.
At the start of the game you randomly deploy three PEFs on the board, behind cover whenever possible. In every turn they move like any figure but according to what you roll in a chart. When one of your figures has LOS to one of them, it is inmediately resolved.
To resolve the PEF you first roll to see if it is the main group, stragglers or just a false alarm. If there is something, then you roll to see how much they are and finally what creatures are and it there is a boss among them.
This way you never know when, who and how much you are going to meet in any moment during the game.