The beginning was tricky – a tree behind a wall, but I managed to position my units: horses in the Fortress and Minotaurs with a hidden spot and a portal. Septinna + Vidomina = 25 skeletons.
On day 2, I made another mistake – I took Logistics instead of Earth Expertise, and spent 3-4 days running around until I got the good treasure boxes (all water, 15k experience, 5 Phoenixes). I started Necromancy with 3 heroes, but even with 400 skeletons, I barely made it to day 127. On day 13, I prepared to take the Castle behind the wall and the Fairy Enclave, and I got lucky finding a cloak and a passage – I took everything, and the Utopias started to fall quickly. I had around 800 skeletons, but the timer was running out. On the last day, because of the timer, I couldn't take two more Utopias. My opponent didn't have skeletons or Ducks, but he had full timers and managed to bite me quite a bit.
Thanks for the game and for the auto-save (I foolishly attacked a computer player in a Castle with a Scout without any flying units).