I've always liked the story of this series but the gameplay has been hit or miss for me. This title has a suspiciously low required assassination count for this series. But it's mainly filled with lots of stuff that I felt questioning the point of.
The biggest example is the weird tower defense minigame that I played once in the tutorial. I guess it's a punishment for allowing your infamy to get too high. But why would you let it? It's so easy and cheap to bring your notoriety down that it's hardly something that's ever a threat. And the few times I did allow my notoriety to get a little too high nothing happened at all.
Then there's the shop buying which is incredibly annoying to me. I'm not sure why buying everything has to crank my infamy up another 25% but apparently it does. It's strange that buying a shop would crank it higher than killing many soldiers in plain sight does.
There's a large arsenal of weapons and I bought some of them buy to be honest there was never really a reason to use anything other than the assassin knife things and a sword. I didn't even use the bombs because I thought they were incredibly tedious and ultimately not worth my time.
On the plus side, the free running is better than in previous iterations. And that seems to me to be the bane of this series: as the free running improves the rest of the games get bogged down by stuff that I ultimately dislike.