I am finally getting the hang of this thing. Found out that starting slow/steady yields much better results long-term .. the action packed Arabian/Moscow starts had me convinced that faster was better
Just finished a Bulgarian run .. way too easy. Konniks combined with spawning just before Byzantium gets crossbows you can usually grab the capital in the first 2-3 turns and then just wait for the collapse before cleaning up.
Got the reformation in 1280 I think, was tech leader with practically all wonders except a few catholic ones. By the time the Ottomans came around I had Muskets everywhere and huge stacks of knights.
Tried Hungary before I realised the Ottoman spawn had changed so aborted when I saw the stack of doom they had. Easy sailing otherwise, good thing is that the land allows for every conceivable strategy be it cottage, specialist or "normal".
Reformation in around 1300's with all neighbours as vassals, not a single war fought. Will run again and prepare properly for the Ottoman spawn.
Finally succeeded as Germany. Never could get that 3rd vassal (at least not one that survived long enough). Cottages with free peasants is huge! Took a while to find the city sites due to lack of food, but some initial farming handled most issues (snag Amsterdam ASAP, great site until Berlin can be had).
Burgundy vassalized after 100 years, poor guys are trapped between a rock and a hard place, nurtured them to a 5th place in score .. they became a real boy \o/. Portugal and Venice both vassalized after failed wars against Byzantium.
Someone was cranking units like crazy and I had to stop a few of my 9 wonder cities to keep up .. most annoying
Currently doing a Norse. Old trick of sending boat straight to Mediterranean still valid, this time just with Beserkers. Palermo is a god send.
Raze Marseilles, Toulouse, Bordeaux, Lubeck and the two UK sites for a head-start on the UHV criteria that might prove to be a bother
PS: Remember to crank out Beserkers like mad before going for Civil Service. Maces+Amphibious = ouchie!
Notes:
Venice is unbelievably strong. They out-tech everyone and consistently rank 1-2, especially if they get of their asses and expand.
Genoa settles one island and sometimes takes one of the UHV cities .. then he turtles. Seems that both the Italian's are lacking a bit on the expansion front.
Austria/Hungary/Poland are doing nothing. They vassalize to each other once in a while but no major land shifts at all, doesn't seem right.
Germany has an above average chance of survival now. When they do they become a serious contender so good stuff I think .. perhaps a little more friction with neighbours as mentioned.
Iberia is beautiful. Conflict, vassals, drama! If Portugal actually settled some islands and Cordoba didn't collapse when hit with a breeze from the wrong direction it would be perfect

Kiev can be bad-ass. the UHV a walk in the park. Not sure what to do to make it more challenging .. perhaps add 4 coastal cities as requirement or something. The land they possess is beyond godly and the UP is just "why bother farming"

AI messes up hard to pave way for Moscow after cultivating area though, so that is good.
Still haven't managed to get anywhere with England. Flips are overrun by French and the lack of rivers makes for a very, very slow start until Guilds can be researched. Any tips as to city placement?
That's all for now.