I finally managed to get all the achievements!
Some facts:
- Every game was played at emperor difficulty or above, except the first one where I played as Pericles at king.
- Every game I played had one or more achievement to get.
- Most of the games were played at standard settings: emperor, standard speed, ancient era start, standard size.
- The most difficult one, in my opinion, was "You're the Demonstrably Greatest". That took 17 hours of gameplay (I don't think I'll play Alexander again in the near future).
- The most lucky one was probably "Selfie": I got it in my first game, with a culture victory as Pericles, without ever knowing another Pericles was in the game (he was eliminated before I could meet him).
