AC1
(To re-post earlier comment on AC1 as a timesaver)
I can forgive a lot about AC1, given that it was basically an untried prototype at the time in terms of setting and content. I'd never played anything like it.
I quite liked Altaïr as a character as well. Even though his character growth was limited to the scenes with Al Mualim and with his targets, I thought they handled the gradual peeling back of the layers of his understanding quite well.
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Not being able to swim was an arsehole, but at the time I think I rationalised it in my head as Altaïr being weighed down so much by his almost Link-Of-Hyrule level ability to carry a shitload of stuff.
The beggar women can go fuck off into a giant boiling urinal forever though. The number of fucking times I was tempted to break the Creed after hearing "JUST A FEW COINS I'M POOR AND SICK AND HUNGRY" is beyond counting.
AC2
Essentially took everything I liked about AC1, and gave it a fresh coat of improvement.
Far better character models, added swimming, brilliant cast of characters, taller stuff to climb. The Assassin tombs were fun puzzle sections.
Advancing the Desmond plot by getting him out of that fucking room was the best choice they could have made.
Best bit? "It's a me, Mario!"
Worst bit? The feathers.
The Bonfire Of The Vanities DLC was plotted well, but mechanically something just feels off about the way it plays in comparison with the rest of the game, in a way I could never quite put my finger on. Maybe it was the unnecessary spring-board things.
Brotherhood
The Borgias were fantastic villains. I truly did despise Cesare.
Thoroughly enjoyed re-visiting parts of AC2 in the Christina memories, especially the carnivale with the masks.
The tower defence bits were complete bollocks, as was the bizarre decision to make the Da Vinci Disappearance DLC memories available out of sequence with the rest of the memories so you could play them and hear reference being made to events you hadn't seen yet.
Probably my biggest annoyance was the addition of the conditionals for 100% memory synch, and I'm thinking specifically here of that one bastard timed mission where you had to pursue the Wolf Cosplayers through the Roman Underground in under a certain number of minutes.
Revelations
Really did have an epic feel with the way it united the three generations. That haunting take on the main theme is one of my favourite pieces of music in the whole series.
"Sit a moment and rest..." is one of the saddest prompts ever given by a game when you know what will happen.
Sadly, I felt like it was a bit rushed in comparison with the others, and could have been longer. I would have quite liked more scenes of substance with Subject 16.
This was the one where I started to get annoyed by what I thought were important plot developments happening offscreen and being told about them later on¹, a trend that unfortunately continued into future games.²
Also, the map not fully revealing and leaving some bits still fogged after you synched viewpoints was an irritant.
AC3
I liked Connor as a protagonist. I know people like to criticise him a lot because of his personality, but fuck me, you try being effervescent after the life he had, not to mention him suffering due to the comedown from and inevitable comparison with The Swashbuckler In Chief and Professional Panty-Moistener Ezio Auditore.
Really glad the twist at the end of Sequence 3 didn't get spoiled for me at the time, because that was a proper Holy Shit moment.
Finally offing Charles Lee was one of the most satisfying moments of all.
This was the one that annoyed me because of the sense that it was playing to the mass American market in a way designed not to offend them too much about the darker aspects of their history and potentially hurt sales/court hysterical Fox News commentators. "Ok, so only make the smallest reference to the fact that the founding fathers were slave owners, while playing up the fact that Benjamin Franklin liked to put it about a bit with older women." And where the fuck was Thomas Paine? His perspective would have been perfect fodder for a game of this nature, but he's entirely absent.³
I have yet to play The Tyranny Of King Washington DLC, but I will get around to it eventually.
Liberation
With apologies to Aveline, I have yet to finish her story. I have started the game at least 3 times, but then something always seems to grab my attention. I fully intend to go back and finish it, because what I did play of it, I liked.
Black Flag
I return to Black Flag probably more than any other game in the series because I cannot overstate how much I truly love taking the Jackdaw out for some ship combat and singing along to sea shanties.
There's something about the way this game does colour that still impresses the hell out of me. The jungles are so lush and vibrant, the shallow water looks so clear and warm and inviting, and my monitor makes them look far and away better than so much other stuff even now.
I enjoyed the modern day stuff, although I did feel that limiting your movement to a slow walking speed in those sections somewhat hurt it.
That being said, the meta-plot about working for a French Canadian video game developer making games about Assassins vs Templars was a litte grating, in a "This is either a ballsy move by Abstergo or they are really inviting their own exposure" way.
Worst bit? The tailing missions. I'd had my fill of those several games ago.
The Freedom Cry DLC being released as a standalone was a good move, because it is eminently better than half of what preceeded it.
Rogue
It is difficult to describe Rogue without the words "Cash Grab" being flung at it, although that is somewhat unfair. Yes, it is basically Black Flag On Ice, and re-uses a shit ton of assets from both that and AC3, but at its' core there is a good story with a unique protagonist (and I don't just mean Shays' godawful Kiss-Me-I'm-Oirish accent).
Too short by half though, and the good ship Morrigan feels inferior to the Jackdaw in terms of power given its' smaller size.
Probably not the most popular of games, although it does fill in some gaps in the timeline and explain the early histories and eventual fates of some returning characters.
The final mission being a crossover with the intro of the next game was a nice touch.
Unity
First game I played on the Xbox One, and despite the bugs it impressed the absolute hell out of me on a visual level. In that opening level, as Arno moves from a dark area to an illuminated one, the light level would change from cool to warm light and it just fascinated me to watch it.
I will forever think of this one as the origin of the term "Ubisoft Icon Hoovering Simulator," despite previous Ubi games having densely cluttered maps full of icons. Unity took that icon density to a whole other level though, that map is just absolutely fucking carpeted in the stuff.
Best bit? Elises' hair. It says something about the quality of a thing when four games and a new generation of console later, Unity still has the best looking hair tech of any game in the series.
It is a bit difficult to keep track of which character is which when 50% of them are middle aged white guys wearing the same wig though. Is this the Templar guy or the Assassin guy? I don't know, they could be twins as far as I can tell.
I was quite put off by the realisation that you could only have one save file on the Xbox version. If I ever wanted to replay that Jacque de Molay opening bit for any reason, I would have to overwrite the torturously 100%-ed previous save to do it.
Do not get me started on the fact that you needed to do co-op multiplayer stuff in order to gather enough upgrade points to grant Arno enough skills to satisfy the 100% synch conditions in the single player missions. I have terrible memories of doing missions with groups of randomly found randoms and waiting for That One Guy Because There Is Always One to get off his arse and move with the rest of us.
I think I may have played the DLC, but it doesn't say much for the quality of it that I genuinely can't remember it.
Syndicate
Visually, Syndicate always felt like something of a step back from the bar set by Unity. Possibly this helped it have a better, smoother framerate than Unity ever had, and crowd density was probably sacrificed in order to accomodate carriages.
I think this was the point where I was truly starting to feel franchise fatigue in terms of how I reacted to characters and plot structure. Person famous for inventing for something becomes your historical equivalent of Q from Bond? Check. Just happen to bump into someone famous from the era while wandering the streets? Check.
I didn't really enjoy playing as Jacob when missions forced me to, and found myself longing to be allowed to play as Evie again.
That grappling hook though. Sheer bliss, after so long laboriously climbing up the sides of shit. Needs to be a standard feature in any part of any game set post-Victorian era. I don't care if it's just Shaun and Rebecca using it to get to the top of the stairs in their house faster.
Worst bit? Feeling de-powered in the Jack The Ripper DLC.
Best pistol ever:
Origins
When Origins was first released, I really, really did not get on well with the new control scheme. After playing Odyssey later on, I had gotten used to it by that point and when I went back to replay Origins I found the experience much more enjoyable the second time around because I didn't feel like I was fighting the game itself.
It's quite a grind, getting your equipment up to standard whenever you level up. The rewards for doing so don't ever really feel like they justify the amount of time, money and resources you have to invest to do so.
Still felt like you could play missions somewhat out of order though, and I don't enjoy that.
The Hidden Ones DLC was quite satisfying.
Odyssey
While I thoroughly enjoyed Odyssey, I will also say that it is probably the first time I've finished an AC game and thought "I do not intend to ever play this again, ever" and that was purely down to the enormity and length of it, and that was before the various DLC stories.
Valhalla
I'll admit to finding Valhalla somewhat boring and a bit of a disappointment in comparison with the other games. Eivor is not a bad protagonist (either of them), but never really captured my attention in the way previous characters have, and the way the main story just sort of fizzled out was just... meh.
I think it suffers from having a setting with such a dull colour palette after the same exotic vibrance that Odyssey had, in the same way that I loved the same thing about Black Flag. It's like going on holiday somewhere lovely and then having to come back and go to work on a dreary, grey Monday morning.
I've got a week off work coming up where I plan to blitz my way through all the DLC that I haven't touched yet.
¹ Altaïr's other son Sef, plus one-armed Malik, both being murdered on Abbas Sofians' orders. Hell, we never even got to see Sef Ibn-La'Ahad in any way, but Malik was somebody who was fairly prominent in AC1.
² Stede Bonnet and Jack Rackham both dying offscreen in Black Flag. Rackham, admittedly, was a bell-end but Bonnet was a friend.
³ He does eventually make an appearance in Unity, but it's so brief and inconsequential that they could have replaced him with quite literally anyone else in the context and it wouldn't have made a jot of difference.