I don't know what the problem is with the walkthrough; I completed it on the first try (although on Veteran difficulty). Golems with immunity to magic and summoning fire elementals are effective.
But that's just a side note...
My problem is this: after killing the last purple enemy, a cutscene plays, blah-blah-blah, "I didn't expect it to end so quickly," and so on... After that, it says - the purple enemy has been defeated, the tasks have been completed, and that's it....
It doesn't proceed to the next mission; it just displays the map, the hero can't move anywhere, you can click on the city icons and the game moves between them, you can select other heroes, but basically the game is stuck...
Has anyone encountered this? I started over; maybe that will help, but if not???