I want to add some thoughts. I had a chance to play a few hours last night on version 1.1.0.
There are some technical issues. No one will argue that. Those technical issues aside, I am very impressed with this game. When the bugs are sorted and gpu drivers & patches make the game smooth, this will be a truly impressive game.
The combat is much more difficult, at least that I could see. This is a welcome change. While the mechanics are still parry & counter as in previous games, early on in the game (at least, no idea if this changes later) a successful counter does NOT just instantly kill the enemy. Timing on counters is much tighter, making failed counters very common early on. This also means there are ACTUAL REASONS to change weapons, use smoke grenades, and do assassin-type things that didn't need to be done at all in any of the previous games. This is a HUGE improvement, and is very much game changing.
The new parkour system has quirks, but is not nearly as poor as is suggested in the reviews. The free-run down (aka - climbing down in awesome style) action is amazingly welcome, and saves the old frequent deaths from jumping from too high or the 'Run to ledge, come to a complete stop, hold b and down until you get to the bottom, fight the mechanics of a wall you cant see' pattern. Instead just run to the edge, and parkour down the wall. It's actually very awesome.
The new parkour animations are quite good too. There are a few times when I thought 'Hey, even for AC that was a ridiculous leap from there', but those are few and far between. I am fairly certain it only looks that way because Ubisoft tried to make the climbing sequences faster, which means less of the Assassin adjusting his position to launch properly as we have seen in the past. No one is flying around or anything like that, but from time to time it just looks odd.
I have not experienced any bugs other than frame-rate "bugs".
Arno is quite likeable. I'm not sure why reviewers didn't like him. There are some gaps in the first sequence story-wise that can be pieced together if you have even a rough understanding of social history, but nothing that really affects his character. He actually really reminds me of Ezio when Ezio was young. Does what he wants when he wants, smooth, charming, caring, but also selfish. Chases women like Ezio did too. I did find myself saying aloud "Well it's like the Capulets and the Montagues" (
https://www.youtube.com/watch?v=7G6pdD5GyCE#t=370). But I'm a Seinfeld nerd, so there's that.
The new stealth mechanics actually make stealth much easier to use, since you now know exactly when and where whoever is chasing you saw you last.
The sandbox style approach to missions hasn't made full-form just yet - limited opportunities in sequence 1, but what is there alludes to this being pure awesomeness. It is clear that Ubisoft had a vision for what this would look like, and my initial impression is that they have delivered.
I haven't made it far enough to understand how large a deal micro-transactions are, but i'm not too worried about it.
One beef I have is how Arno moves through the crowds. Maybe I'm doing it wrong, but I'm basically just shoving giant mobs of people out of the way. In a game where the mobs will play such a huge role, I really hope there is a way to slide through gracefully and I'm just a noob that hasn't figured it out yet.
Textures on second highest setting are maxing out my video memory on 2 x 7970 @ 1080p, which is 3GB. Crossfire is working but my GPUs do not hit 100%. I haven't checked the CPU usage but I doubt that my 4790k is being pushed. I'm guessing bottleneck is in the textures, but haven't played with these settings much yet. Currently having 8GB of RAM, and am considering getting more if it looks like it will help performance.