The Sunken Chamber is a quest in Might & Magic: Heroes Online.
The ferryman is surprised the hero obtained the oboli. Thus, the ferryman lets the hero take the boat to the island. Once on the island, the hero has to go southeast, defeating two stacks of faceless ghosts. At the end awaits the Guardian of Laments, who will not let the hero pass without a battle. The guardian, in the first stage, is accompanied by shadow lurkers, ghosts of vengeance and drifting faceless, and casts powers to inflict mild damage on the hero's forces. In the second stage, the remaining forces have to combat the guardian, who acts as a boss. In addition, the hero has to defeat two portals, the dark crossings, which can summon more lurkers. After the guardian's downfall, the Dreamer of Fate, the final entity, appears.