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Arandor (blue, Necropolis, Septienna, Charna, or Vidomina, etc.) vs. eXeCuToR (red, Dungeon, Malekith, Gunnar)
...I don't remember the beginning very well... it's been a few days... towards the end of the first week, I took Inferno (empty). I was building troops in my home Castle... I developed up to liches, upgraded everyone (except skeletons). The enemy captured the Castle in the upper left corner (I was in the right), and I was below in the middle (both Castles)...
I bought Inteus (elementalist), went scouting, took the wood, saw the Castles, and went along the same path to the Castle that my opponent had taken... while he was wandering around looking for resources, he wasn't far from my Inferno... in general, I captured the Castle (empty), bought pikemen and archers (there was a fairy)... and repelled the enemy's attack, which had several minotaurs (maybe someone else... I don't remember)... the second hero (Gunnar) got too close to the Inferno and was killed by its inhabitants, led by Vidomina...
After that, I went with my main army to the enemy, we fought near the Castle (I sent reinforcements beforehand)... the result: Arandor's victory.
We played on a random map, map C, difficulty 160, without dungeons and water.
P.S. The heroes weren't very lucky (they had almost useless specializations... Septienna and Charna were at the beginning). I bought Vidomina later