After playing around with the game it feels like it is not balanced for two heroes. Since most of the quests require an objective it doesn't feel like having 1 around 1 monster less per group allows them to be able to do the activities that are required along with fighting off the enemies. Add in if one of the players rolls badly and goes down, it gets out of control very quickly as they are overwhelmed as they are missing one action per turn, probably clumped together and have almost no health and fatigue to last the next turn. We have played a bunch of maps with different overlords and the result is typically the same. Heoes do ok until one goes down and then it's just a matter of time until the Overlord is able to draw whatever card he needs (typically frenzy or dash) to win.
Does anyone else feel this way or is there a method of making a two hero party more fun?