Can you combine heroes to fight bosses? I can't make a 13 for the demon boss (-1 TN, 2x +1 skill, 3 in att or magic and a 6 on the die is only 12). I feel like I'm missing something.
When you beat the demon lord you should have all your rooms upgraded, so the bonuses scale with room/castle level
Oh yea, it was late and we were just ignoring the tier penalties. That changes everything!