By week 3, I was developing my starting area (the respawn and adjacent zones), and only after taking the Griffin Conservatory (level 3) did I engage the opponent on day 131..
In the first final battle, the opponent got lucky and escaped with a single unit at 3 HP, but the second time he miscalculated and couldn't escape with his Harpy stack.
There, the Deemer was hitting hard with lightning, but Nile's Iron Golems with Advanced Offense and Expert Defense, plus stats on Attack and Defense, carried the day))
Thanks for the game!