I challenge you!

I played as "Hero" against the AI and finished the game in 12 days. I encountered the main AI player on the third day, and after giving him a good beating, victory became a matter of time. I captured the garrisons on the 2nd, 8th, 9th, and 10th days.
After taking the first garrison, I foolishly rushed towards the enemy city and suffered a crushing defeat – the approach was blocked. I had to read the forum and understand the trick.
The map is truly designed for multiplayer and two Homo_sapiens, playing against the AI is boring.
Although, it's quite good as a mental exercise. :)