I took a long break from playing the campaign, so I'm now finishing the old version on veteran difficulty. I'm having trouble figuring out how to complete the 5th mission. At the beginning, I slowly and with great difficulty (without a mine) defeated the purple faction. As a result, by the fourth month, I reach the orange outpost and am ambushed by a mage with 140 titans, 200 rakshasas, etc. I have 12 dragons, 8 angels, 87 monks, 22 sorceresses, 14 knights, and 400 archers. It would all be fine, but he has the King of the Gnomes' hat, the Forgotten Hero's armor, and he can reflect spells. What am I doing wrong?