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I confirm. For a no-restart game, it held up very solidly — 3 external dwellings of harpies, 2 Griffin Conservatories (2-4 and 3-4), and a Pandora's Box behind a crowd of upgraded dendroids (turned out to be 40 of them). The goal in the first week was to gather and buy out the harpies and take the Pandora's Box. I attacked the dendroids on day 116 with 40 upgraded harpies and nearly a hundred troglodytes, and with tolerable losses I captured the Pandora's Box giving 10k experience. Gunnar on day 117 was level 12 with expert Logistics and Earth Magic. By the second week, with 70+ upgraded harpies and mass Slow, taking the Griffin Conservatories was not difficult. Well, after that no particular problems were anticipated on my part of the map.
Thank you for the game.
P.S. Special thanks to Falcone for a decent move — in the first distribution, I blundered with auto-combat and lost a hero with an angel at the start of the game along with all the artifacts, and had no motivation to continue, but he suggested a mutual restart.