I actually liked Unity. Its the best 'pure' assassins creed game.
Easily has the best parkour in the series. Customization too.
Best looking AC game by far. From the exteriors to the Interiors. Beautiful looking game.
I liked the story as well. Paris in the grips of the French Revolution is an amazing setting. Characters were all great, from fictional ones like Elise and Germain to the historical ones like Napoleon.
If they hadn't fukked the launch up and soured everyone's taste early it would have been legendary. Top 3 AC game.