Spending a year building an army – I wouldn’t have the patience for that. The fact that Blue showed up with an invincible army is a direct result of the long wait. I haven’t tried completing it on Champion difficulty – it’s not my turn yet, and I haven’t analyzed it – but the trick here must be something else, but definitely not just prolonging the game. It allows you to win a battle, but lose the war. As for the step-by-step instructions – it’s written quite well, the essence is clear, and for complex games, such a guide is very useful. And the topic is quite normal, because the tactics for such a battle are really very complex – pure brute force, no support from the hero, and the hero’s death means the end of the game. By the way, make a request using the campaign name, not the hero’s name, and to refine the search, try entering clarifying words – sometimes it helps.