The game essentially played out based on the save, but I don't see a point in continuing it. In short:
The opponent took three 111s in a row and constantly re-stacked with some crazy units.
Then, I tried to catch up and even re-stacked with mediocre units; eventually, I managed to do so. I had a total of 0 on all four computer locations: two were desert, one was wasteland, and the other was swamp. It took three days to reach the central wasteland location from the castle. I struggled, honestly. I had a powerful stack of 50+ Medusas, built Angels at the second location near the computer, cleared the desert location, and reached the mountain range, which I had to bypass endlessly through the desert. Then, I moved to the swamp, took three Hives and one Utopian, but they didn't give me much advantage. Meanwhile, the opponent arrived through the central wasteland location with full control, a dozen Griffins, and other powerful units. I immediately thought about evening the score. I fought the final battle almost perfectly (considering 15 mana on Shaktis, against powerful magic and 300+ mana on the opponent's side). Essentially, I traded a stack of Vivs for the opponent's stack of Angels, bought time, and retreated to the underground location, which ran along the edge of the map, in search of better luck – and that's where the game was saved.
Given my recent result, I don't see a point in continuing to torture myself – I surrender. I haven't played such a frustrating game in a long time.

Thank you for the game!