My brother and I played two more games with Guilds cards!
The first had Journeyman, Butcher, Alchemist, Spy, Swindler, Moat, Bridge, Gardens, Harem and 1 other that wasn't used and was not a village. I opened Swindler/Potion moving into Alchemists, and picking up a Butcher. Once I was reliably drawing lots of cards, I started Butchering things into Spies to keep my deck moving. My brother opened Swindler/Silver, and also moved towards Alchemists and a Butcher, but I got much better luck (particularly with Swindler) and won.
The second game was a complete gong show with Baker, Herald, Treasure Map, Fishing Village, Lighthouse, University, Tribute, Herbalist, Harem, and Outpost. With no trashing, and no reliable +cards, my brother wanted to try playing with Herald anyways, so got some Universities and 9 Tributes (I took the last one.) I also started with a Herald-style approach but then became fixated on the plan of overpaying for a Herald by $2 with two Treasure Maps in the discard to match them next turn. I was so fixated on this, that I ignored the fact that I had two TMs in hand one turn.
. I somehow won anyways. Also, the coin tokens work well with overpaying because you can save lots of cash for one turn.