The Quest for Truth

As I understand it, there's no way to put text in a spoiler here, so I'm writing with spoilers.

And so, I finished this Campaign. The last two missions really stood out, namely Sandro and the Vampire mission. What can I say? It feels like they squeezed every last drop out of Heroes 5 and created a great Campaign without glitches, without tedious gameplay, and without a drawn-out plot. Minimalistic, but really beautiful locations, especially those "heavens" like in Heroes 6, and the storyline about the coolest character in the series - Sandro - is, for me, perhaps the biggest plus. I haven't played many full Campaigns, and before this, I considered MasteR's Campaigns to be the best, but now there's a new favorite. I played all day from morning, I was emotionally drained, it was just so awesome. In my opinion, Sandro deserves such storylines; he is the only one who saw the essence of things, and it's such a pity that he was killed off in the plot without any explanation. Fortunately, such Campaigns shed light on things, albeit through the lens of the author's understanding. The only thing I didn't understand was three things: what was that booklet in the last mission "Part 1: 81," why did Mythgard have a special aura if Sandro was going to die anyway, and who was the mage who saved the paladin at the end? Especially about the mage, because it looked quite funny and like a cliché. I can't fault anything else; I liked everything, definitely 10 out of 10. Heroes is worth playing only to Download this Campaign and play it later.

Added 1 minute ago

The additional quest with the sacrifice appears if you kill the mage in the dungeon, if I remember correctly.

I didn't get any additional quest. But once all the bugs and AI behavior are fixed, I'll gladly replay it.

(And I would weaken the spirits in the 5th mission; it's quite annoying to kill them to save the entire army; you want to get to the boss and the ending, but you run around the islands for half an hour trying to defeat them)

Added 2 minutes ago
And I'll add one more thing. In the "secret mission" for the vampire, the Shantiir crystal is very overpowered. If you place skeleton archers in a corner and the crystal diagonally in front of them, most of the 2x2 units won't attack the crystal; they'll just get stuck. I was only able to complete the mission without too much trouble thanks to this; in my opinion, it's the most difficult mission in all the Campaigns...

Added 4 minutes ago
Damn, I'll add one last thing. If the Campaign is too difficult for you, go through the blinding vampires, darkness, mass acceleration in the attack branch, and use dark energy to only eliminate vampires. 300-400 of them can destroy legions solo. I played on Hero difficulty and didn't encounter any difficulties except at the very beginning of the missions.

Added 9 minutes ago

If an orc spawned in the third mission, then the script for the second mission didn't break; it worked as it should. Was there a battle with a demon when you closed the portal?

There was no battle with a demon. I went into the dungeon after I had defeated everyone I could, except for the last orcish castle. I really liked the "eclipse" color filter. There's a mage standing there, I kill him, and I approach the portal, nothing happens, the quest is completed, not even any audio tracks are played, let alone a cutscene. I thought that's how it should be; the "red" light filter turned off.