Bugs?
The game crashed and I never had to be restarted before. In nearly 12 hours of play I had exactly one frame rate of error after 3 seconds was over.
In crowds it gives off and seem to float to the times weird things like people or objects float without person through the air. But even that is rare.
Otherwise?
As others have written, Unity reminds me of the Ezio series and that is exactly my feeling is the game fascinates me. Graphically I am fascinated at every start of the game from the beginning. For fans of AC and AC2 found the people great is Unity just the game.
My PS4 version is stable, I think the main problem is the PC version.
Nevertheless, the "Publisher" policy is, matches a fixed date to hew out no matter how, really CRAP! For a month longer in development and everything would have been fine.