Visigothic: Dungeons of the Goblin King:

Come with us once more, together with our heroes in one of the most daring, dangerous and most consequential quests of their lives with the fate of all the free peoples of Midgard hanging in the balance. The time has now come for King Sigurd to deal decisively with the Goblin Empire. But how to do it becomes the question as the Goblins rule a vast mountain empire, the centre of which is an immense underground city beneath Mount Elbrus. Moreover, it is topped by the most formidable fortress ...