The Death Knight of Maargadum

The magicians have strengthened the barrier around the dungeon of Maargadum, but it will not hold forever. Gradually, the evil that lives inside will get stronger so much that it will sweep away all obstacles and break out. Alas, too often heroes who overestimate their strength come to the dungeon... And when they die, the army of death is replenished with new puppets. Destroy the former priest, and now the death knight Maargadum, so that the evil will calm down at least for a while.