Done. Yeah, I agree the start is tough; it took me 2 tries to pass. The first time, I reloaded as soon as I lost my archers and horses—maybe I shouldn't have, maybe I could have won. During tests, there were even harder battles. I even cleared all the elementals just for fun.
In ordinary scenarios, authors may create invincible enemies (for the moment they appear), but the player has the opportunity to come up with something on the strategic map: distract the enemy hero to better prepare for battle, force them to attack a Castle, or defeat them over several engagements. MasteR's maps, for example, are balanced specifically for this kind of gameplay. But here, all battles must be won immediately "as is," and that makes the scenario very difficult.
To sum up, the scenario is unusual and interesting in that it forces you to think about tactics in difficult battles; there are also many videos. And even having lost, I can say...
Thank you very much for the map!
For example, I haven't completed a single scenario by Redheavenhero; I tried "The Veil Falls" about 8 times with different tactics, strategies, and builds, and still couldn't do it. In that case, I believe the AI is some kind of insanely over-buffed.