Thanks for playing and the in depth feedback! Those are some really good insights. The point counting on the final round is a bug, and triggering order / the way they interact with the blood rivers are things we need to do a better job of explaining.
The plan for trigger order was that abilities that are "tied" for execution order (like golems and other golems) would execute top to bottom, left to right (like how you read a novel), but that is both unexplained and I think currently not working correctly :D
About the golems and blood rivers, those are another thing we should explain better. Just for your sake now, and if there's anyone scrolling into the comments to see how it works, all "when placed" abilities, like golems, rat kings, etc. trigger first. Then "every turn" abilities happen, like rivers checking for #blood, or rats checking for other rats.