I was playing Maskerade Ball yesterday and my Heroes found a pretty efficient way to prevent overlord from completing victory conditions.
Encounter 1: they rushed and blocked movement in the exit corridor with 2 heros, preventing monsters to escort any guess through the exit.
Encounter 2: they rushed and blocked movement in front of the locked door in the 3rd corridor, preventing Eliza Farrow from opening the door and complete the objective.
With just a few monsters left, It was impossible to kill any of the heros blocking movement.
Meanwhile, the heros just took their time and looted every chest, with 2 heros blocking the path, overlord could just watch and wait until game over.
I can see it coming and they'll try this on every map now
Is there any way for overlord to prevent or the beat this "exploit" ?