Does it state anywhere in the rules that the health and fatigue/stamina status of the heroes needs to be viewable by the overlord?
I was playing the "Fat goblin" encounter 2 as overlord against 4 heroes. Sprig had Frederick and was making for the exit, when the heroes blocked the corridor. In order to clear the way to the exit, I wanted to attack the character with the least remaining health to try to knock him out (in case I didn't role a surge to apply "knockback" to clear the route). Suddenly the opposing players grabbed all the health and stamina tokens off their character mats and hid them under the table so I couldn't tell who had the least left. They said the overlord s hould n't be able to tell the status of the heroes.
Was this a legitimate ploy or illegal?
Thanks