By the very beginning, I mean either the end of the first week or the start of the second. The moment when La Discorde first runs past us.
Regarding repeatedly buying the same hero in one day. I used this on this map to kill the strongest of the Four Horsemen of the Apocalypse, shackled by War, and save a few game weeks, but this tactic certainly doesn't make the player honorable.
And about not killing a key hero for the scenario when you can do it at any time. It doesn't seem like normal gameplay :)
Added 2 minutes ago
But I also liked the map overall, even though I couldn't complete it, despite killing all the AI opponents on the map except for the inaccessible Angel Castle.
I also really liked the map; I would give it an 8 or 9 out of 10. Everything is great, but the author didn't fully develop the moment with the possibility of quickly killing La Discorde. In fact, you can do it by scouting only 10-20% of the map. He should have given him the opportunity to escape somewhere. Although, perhaps this option was left for the "faint of heart" who decide not to fight the legions of enemies but to kill one weak hero :)
I don't often use dismissing and hiring heroes. But on this map, I wanted to overtake the AI and take control of all its heroes. I set exactly this goal when playing and followed it. In essence, I managed to prevent the apocalypse, as the author intended :) The map is definitely worth paying attention to.