There isn't much to say. It's unclear why I didn't restart the game earlier; the situation was bleak. Everything was going badly, with devils appearing on the path, and Anabelle wasn't leveling up (neither Earth nor Tactics skills were effective). I found Tyraxor and started leveling him up in the third week. I reached level 144 (my opponent quit earlier). On level 145, I found the Earth book, took a castle in the center using a lock, teleported, and saw Jeremy. I attacked with shackles. I had an advantage in both army and stats.