Sacred Tree

Well, what can I say... impressive work! I finished the scenario. It's truly epic. What I liked... there are many diverse battles, excellent map visuals, and despite all the scripts, it's very stable (I played it, even with a new profile, but with all my mods and without the author's music). The map is polished (I didn't encounter a single bugged area, all objects are in the correct places and work, all quests are completed correctly, and I noticed only one typo in all that text!). What I didn't like... I don't like playing as the undead, there's a lot of text (I mentioned it in message 52), the second hero (he helped a lot, but basically I carried a duplicate of him with me throughout the game in terms of stats, etc.). Basically, all my criticisms are just nitpicks because this is excellent work. I completed all the quests except for the mage in the tent (I don't like doing all sorts of nonsense that isn't related to the game), I just beat the mage, and then at the end I beat Cryogen, who he complained to (although he halved my troops with one spell, but that was his only spell). At the end, I teleported and got rid of the units that were no longer relevant.
I fought until I was exhausted. Thank you for the game - I haven't played such a high-quality game in a long time (I'll give it 5 stars, although all that text really stressed me out, and I agree with Sir Syddan in post 47).

I'm playing on Veteran difficulty, the author has done a great job, it's impressive, but I'm a little tired, I've been playing for 20 days) for 20-30 minutes at a time, but still. I'm already in the 6th month of the game, I'm afraid I've gotten too into it. I reached the demon and a message appeared saying that an elf was summoned to help. I defeated the Knight with considerable losses. I wanted to know if the demon's army grows over time? It just beat me so badly, I don't remember how many nightmares he had, 150-200 at a time, which wiped out my 300 vampires. Basically, I couldn't even take a turn because I had 2 rings on initiative.
I was planning to go get reinforcements in the Castle, there's a 2-month growth there, I think I can manage. And after the demon, is there much more gameplay? Because despite how cool the map is, I'm getting tired of the game.
P.S. - I've been stuck on the riddle for the second hour. I just want to finish the map because of it. Even ChatGPT and DeepSeek have given up.
Okay, we got the letters Z, O, P, V from the cipher. - if Z, O, P have numerical values, then there is no such value for V. I tried all the numbers instead of V from 0 to 10. Nothing worked.

The second option, if Z is earth, O is fire, then P is something unclear. It's either air or water. It's nonsense. I tried that too. I tried the cipher 4-7-9-8, I tried the cipher 7,9,8,4. Nothing worked. After that, I looked at the text document with the hint. It's obvious anyway and doesn't help in solving the riddle at all. I'm just stumped.