Their sacrifices are not for nothing, however.
RELATED: The Burning Crusade Classic: Every Dungeon, Ranked By Difficulty Players will lose their heroes time and again, as that's part of the gameplay loop. Their dynamics as a party dictates whether players can face the abyss, or succumb to it after so many futile attempts at winning an uphill battle.
In Darkest Dungeon, efficiency is the glue that holds the player's flimsy and meek heroes together.