Kein Dungeon Crawler, aber in die Rolle der Antihelden kann man z.B. bei Shadow Kingdoms of Valeria schlüpfen. Deine Beschreibung erinnerte mich daran
For years the humans, elves, and dwarves have been slowly encroaching on your territories and slaying your kind in the name of progress. They've built their citadels, keeps, and villages as they push you further into the darkness. Now is the time to rally your troops and lay waste to their kind and bring forth the reign of the Shadow Kingdoms!