Majesty 2, Part 2

I must admit, I’m stuck. Most of the levels I completed with no trouble and now I have five of them left. The only one I can access is The Eternal Love where there’s a Skeletal King Boss.  I tried slowly building up my army and it does work, but after a while the boss just waltzes in my town and destroys everything. Enemies attack from all sides, so I really don’t have time to build up my economy properly and train my heroes to a high enough level. I’m guessing I need to rush some areas, but I’m surrounded by temple grounds guarded by elementals, so I need to pay close attention to my heroes to keep them from dying. Anyway, I’m to tired for another try now, so I will continue again tomorrow if I get the time.