Late to the party. I love this game. Let me get the negatives out of the way:
-The fighting in this game is so ridiculously bad. Every time I'm in a sword fight against more than two people I want to pull my hair out and throw the game away. Thankfully, you can avoid fights for 90% of this game. But there are those moments where you're fighting 10+ people, and you just want it to stop, and you try to run away, but they outrun you, and you try to jump to the rooftops, but they shoot you, and you try to jump into a haystack, but they spot you, blargh.
-I've only played the first Desmond sequence but it was really mediocre. Not interesting at all.
-The notoriety meter (and by extension, the tower defense game) should be trotted out in every Game Design 101 lecture to show people how not to mess with your user base. This game has a putrid tower defense mini-game that I (and I hope many other players) have moved heaven and earth to avoid at all costs. All game long I have been renovating shops to accumulate money towards the Sage achievement/trophy (buy all books), but every time you renovate one of these shops, your notoriety goes up by 25%. If it goes to 100% you might be forced to play tower defense. To be safe, I have never renovated more than two shops in a row. Afterwards, I wait until I can bribe a herald or two. And sometimes the heralds do not show up on the map right away, so I have to give up for the time being on renovating. It's not even safe to hover at 50%, because that 50% might jump to 80% or 90% performing illegal activities in story quests or side quests.
-I have no problem with stealth sequences that automatically fail you if you get spotted. What I do have problem with is when the game doesn't notify you that this is the case. This seemed to happen much more in Brotherhood, but I get really annoyed when I get an unexpected automatic failure when I get spotted.
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The above are not trivial points to me. I get really annoyed when I have to deal with those negative aspects. And when I first started the game, I called it trash, because the above seemed front and centre and the brilliant moments of the game had not surfaced yet. Now onto what I love about this game:
1) The bomb crafting. I fully agree with whoever said it feeled tacked on at first, but becomes much better later on. I really enjoy being able to throw Datura poison bombs or Cherry noise bombs whenever I'm in a rough situation.
2) The Masyaf key dungeons. The highlight of the AC series for me. For someone like me who absolutely loathes the combat in these games, the Masyaf key dungeons were a godsend. There are no enemies at all, just beautiful, dark environments and long, sastifying, platforming sequences.
3) Graphics / open world / music / characters.
Funny how I have so much more to say about what I hate in AC Revelations. Either way, I can confidently say I love the game. It has huge warts but they are worth trudging through, especially to experience the dungeons.