I have a hunch on how to rule this but I wish to double check.
Let's say I have an Elite character X with Move 6. It's standing next to an enemy and I want to move it 6 spaces away. Ok, the enemy gets to make a free attack once I leave its "zone of control" (which might not be the first step), potentially dealing 1 damage.
What if this "attack of opportunity" drops my character's stats to the Veteran level? My character X's Move on Veteran level is 5.
Do the new stats take effect immediately? I'm guessing I can rethink my move at that point (especially since I can no longer move to the square I originally wanted to). This ruling should be doubly interesting for eg. characters with Charge ability.
That's a great question, and the answer is not clear in the rules. I'll make sure to update that. The free immediate attack interrupts the movement action. If a character is damaged and their level reduced, they can complete their action, but with their reduced attributes. If the level reduction would cause a character to lose the action they were taking (say, for example, Charge), they can no longer take the action. And in that case, they would immediately stop because the player would have declared a Charge action rather than a Move action before beginning their movement (they couldn't turn the Charge into a Move after losing a point of health and having their level reduced).