Ubisoft definitely could spend a lot more time polishing up their games lately and this game is no exception. Audio cuts out during dialouge sequences, NPCs will stop working during quests making them unable to progress in quests, they failed to put in the classic viking weapon of one handed swords, along with a few other things.
Without the shocking amount of bugs on their latest release, the game looks amazing otherwise on powerful systems and does have a great feel for a little while.