One for all and all for one 5

Game of the 2nd round. I sold the Citadel for 1900, as it turned out, and took all the remaining resources. My opponent had 1 restart left. A strange "structure" appeared in the center of the map, and one Necromancer and some Imps entered to start the attack. I made my way to the corner zone and, from there, along the swampy path, headed towards my own towns. I decided to go along the roads towards my opponent's towns. In the end, on turn 117, my opponent killed my Brown Knight, and near his castle, a portal to my zone appeared. I took the castle and, with Gremlins and fifty skeletons, settled in it, having previously built a Citadel and driven away my opponent's hero. Thank you for the game.