Odyssey took everything that changed the series in Orgins and improved upon it. Absolutely loved Odyssey. Greece was a great choice for the game, loved that it was mythical and you're basically a demigod, they did a fantastic job with the ships again, the cities were great, getting to visit all the Greek Islands was great (well except no Rhodes
). Taking down the Cult was a lot of fun and well executed. Loved exploring every bit of the World (unlike Origins). Was the best AC since Black Flag.
My one complaint is that it's not an Assassin's Creed game. It has zero to do with the Assassin's or Templars and they clearly just used the name to boost game sales.