Game 1: It looks like there might be some kind of Highway+Trade Route combo available here, but it's not clear. Anyway, I use Inn to enable Treasure Map, while Kirian goes Chapel to enable Treasure Map. Although my Inn plan works out, it turns out to be too slow, and Kirian takes it.
Game 2: I am happy I lost the previous match (and so get first player advantage here), as this board features Ambassador, two types of village (Village and Bazaar), and Hunting Party. We both open double Amb. Kirian gets an early Bishop, which I feel is a mistake, while I get a Village then a Silver, with my eye on getting HPs ASAP. (Unlike some Amb boards, copper return priority is a bit lower because getting to $5 is so vital for HP.) Some decent early draws put me pretty far ahead, and I awkwardly transition into a Hoard/Bishop follow-up. HP is pretty good in the face of copper spam, though, and Kirian doesn't fall too far behind in points until pretty late.
Game 3: Young Witch with Lighthouse bane. Maybe the best bane there is, since its protection is almost as good as Scheme early on, plus it gives you money. I go for Alchemists here, which is maybe a bit unwise since it hurts my ability to grab Duchies (for Duke). Kirian makes a nice Salvager play on a Province on turn 14 to get a 5-3 Duchy split. I unwisely salvage my Duchies, which makes it really narrow to get the VP I need to not lose. Still I barely pull it out. There was a lot of stuff going on in this kingdom.
Game 4: Goons paradise. Here, Young Witch has a Masquerade bane. Kirian opts to open YW/Masq anyway, which in some situations I think is fine, but here the urgency to hit $6 is so great that I much prefer Masq/Silver. Although I don't hit $6 on T3/T4, the Library I pick up gets me a Goons on T5, and then I luck into playing it on T6. On turn 12, I play a Goons followed by a Masquerade, and Kirian (presumably) discards a Copper and a Farming Village to leave Farming Village, Goons, and Library in hand. After passing me his Library, I am very very far ahead, and eventually he resigns. (I was planning on transitioning into University, since the Farming Villages had run out.)
Edit: A little more comment: Games 2-4 featured pretty intricate kingdoms. My play in Game 2 was not too bad, but probably not optimal since there were so many options. My play in Game 3 was pretty awful, and we were both confused at how I won anyway. I'm happy with how I played Game 4, though.