I'll update this one as I go, as I'm still fairly early.
- Started a Deity session, rolling America (I had graphics issues that prevented me from playing for two days and decided to restart rather than pick up my Russia gane) as I always use random leaders. The start was amazing, though I made an immediate mistake in moving my settler to the banks of the Potomac and away from the lake where I spawned - that gave me more useful tiles and resources, and quick access to amber, but fewer hills so I made slower progress than I should have.
- Early exploration turned up a relic, I was the first civ to contact Nazca and so for a wonder I got the Earth Goddess pantheon. That sent me down the religious path early. I made a quick settler to grab Sahara El Beyda before the French got there and soon had a +5 holy site up and running.
- This is where things started to go downhill. My most immediate neighbours were the Zulu, who true to form attacked Washington. At the time my military was only just heading home after exploring, so I did what I almost never do - given how much I liked the start - and reloaded after my capital was taken and I was unable to take it back before the Zulu started spawning new units from it, since I was only a bad placement decision away from beating the attack the first time.
- France was on the other side of Sahara El Beyda, so made a push for Baltimore while I was still fighting the Zulu. By this point I had archers and had defeated the main Zulu attack, so I sent an archer up to defend Baltimore. The French offered peace after 10 turns, though I was watching the Mapuche milling around Baltimore worryingly. I bought them off and soon made friends. The Mapuche moved off to attack Nazca, somewhat out of their way, and failed to take it. The French moved in later with greater success, but the city state held out for a long time. The most important outcome of the war was that, as the French pillaged my holy site, I lost my chance at getting a religion.
- I had natural disasters set to 3, which seems to be a good level - they were happening once every few turns. The French seemed to get the brunt of a few storms in the desert, but the only emergency triggered in the World Congress was when Montezuma was hit by - I think - a flood. Everyone except Shaka voted to support him.
- Relations with France and later the Aztecs and Georgia became positive. The same was not true of either the Zulu or the Khmer. The Khmer surprise attack did, in fact, take me by surprise, partly because their colours were very similar to those of the Mapuche but also because they were attacking over sea and I had a view of only the tiles immediately adjacent to my newly-founded coastal city, New York. By now we were into the Medieval era and the Khmer had both swordsmen and crossbowmen - for my part I was still researching the latter. They also had a much larger army than either the Zulu or the French had thrown at me.
- I retreated from New York and hoped I could contain them there - fortunately the AI now seems to be much more goal-oriented and pragmatic in its war decision-making: the Khmer had only wanted New York and happily made peace as soon as possible after taking it. By this point the Zulu had attacked once again, moving on Washington (complete with battering ram), but fatally failing to attack Los Angeles on the way (I'll add screenshots later). I chop-rushed walls in Los Angeles and could cut off and attack the Zulu force with ease, helped by Washington's position along the river making it hard to attack. Just time time - had the Zulu still had attackers a couple of turns later, the thousand-year flood of the Potomac that almost destroyed Washington's wall would have helped them along.
- The Khmer conquest of New York left me with a minor dilemma. I planned to get the city back eventually but it wasn't a priority - I'd forward-settled it and it had already suffered loyalty issues, and the latest wars had delayed my plans to settle the intervening area. The Congress offered me an opportunity to vote for a resolution that would propose the reconquest of New York, but I imagine that this will force me back into war with the Khmer even though I may get certain allies on my side - the French and Mapuche had already denounced the Khmer (though I'd dragged the Mapuche into the war with the Zulu so they may not have forces to spare). Given how bad the AI was at winning emergencies in Rise and Fall I doubt I can rely on them anyway, and I can't afford to take the time to attack the Khmer while planning an invasion of Zulu territory.
UPDATE:
Things continued much as before up to the end of the Renaissance. Catherine triggered an emergency when she took Nazca; naturally the emergency failed. I ended the latest Zulu war after taking their closest cities, and continued expanding into the rest of the available territory - at this point rather too late thanks to all the war-induced delays.
I was now pretty much out of the science game but I had strong culture although only the tourism from my relic. But my new focus was on diplomacy, since I'd learned that emergencies trigger pretty frequently as a result of disasters, and aimed to buy the diplomatic victory points I need. I so far have one (after 4 emergencies, but I now have a healthy income). Unfortunately I didn't realise that voting against a funding emergency prevents you from being able to contribute if it's passed. I voted against one aimed at Jayarvarman since I still don't much like him, but it seems that gamewise there is never any reason to vote against an aid emergency unless you aren't in a position to earn victory points and an opponent is.
Another wrinkle I hadn't realised regarding the Congress is that a motion to declare an emergency will come up multiple times if you pass, but won't come up again if it fails. I triggered the New York emergency slightly too soon, and lost by one vote - so I'll need to incur grievances if I decide to take it from Jayarvarman. Not that I'm very clear what that accomplishes - at this point I've had no grievances against me, or those against me have been outweighed by those in my favour, so I haven't had much opportunity to test the system.
UPDATE 2
Despite being well behind on science my plans worked out for the most part and I'm headed to diplo victory - only for the AI to combine to vote against my victory resolution and knock me down a point instead of my final two, so this game will go on a little longer. New York remained resolutely Khmer throughout, defeating both my and France's attempts to move in - and following climate change it has a much smaller area in any case. I did take two more Zulu cities, partly in an effort to surround New York and try and force it to succumb to loyalty pressure.
The Aztecs are my closest victory competitor, having too many spaceports to sabotage and having just started to work on the Exoplanet mission. No one is approaching any other victory - the French are technically (just) ahead of me for culture victory, but rock bands make it impossible to draw any real correlation between tourism output and actual tourist influence, and the culture victory screen shows us both about a sixth of the way to victory.
Not much more to add or that is likely to change this game. I've liked the Congress more as the game's gone on, though the assorted projects seem to be designed in ways that the AI isn't able to use to gain much of an advantage while being mostly exploitable by humans.