First off, this game was very hyped. We've literally been expecting it for "forever" (give or take a year), since we saw the first gameplay reveal what feels like so long ago, and boy did this game deliver... I mean I used the word "superb" in my title... I'm not the kind of guy who says "superb" at the drop of a hat.
Graphics 9/10 - This really utilizes the Unreal engine, which fits the style of the game and the overall feel. There was nothing in this game graphically to detract from the visuals except for poor wall textures in some of the dimly lit areas (developers may have gotten a little lazy there), for the most part the graphics were able to compliment and deliver the stunning visuals. I was also pleasantly surprised to find that the developers gave more visual options than most games do, allowing me to balance performance and graphics on a gaming rig that is starting to feel the pressures of age.
Visuals 10/10 - As I touched on in graphics, the visuals of this game are stunning. Every environment is unique, and if you enjoyed those feelings you got playing the first Bioshock -- wonder, scale, fragility -- you feel all of that in this game and some. Artistically, this game is a masterpiece, I couldn't find anything to take away from this game. Originally, when I saw the first gameplay footage, I was very concerned with how Elizabeth looked but they came through redesigning her to make her much less like a caricature (in fact they worked with a cosplayer who looked similar to their original design to make the character more realistic). I cannot overstate just how important it was that they did this, the original character modelling would have really detracted from the immersion of the game.
Sound 10/10 - The sound of this game will blow you away. Everything is amazing, I get chills hearing some of the renditions of old-timey religious songs. I'm not sure if they intended for this to happen but it actually really made me yearn for more of that kind of music. It's not all hymns though, don't worry, there is such a variety in this game you should be blown away. There will be a lot of times you won't be able to help grinning, if you recognize the music.
Story 8/10 - The story was great, obviously very well-written and unpredictable throughout. The characters developed well and I was able to connect fairly well to them. In many ways it's structure was akin to the first Bioshock, and although it didn't (sorry to say) deliver on the same scale the first Bioshock did, it was great none-the-less. I don't quite agree with the people who think it's the best part of the game, it was really lacking in some areas. Without spoiling anything, I simply didn't feel like all the necessary loose-ends were tied. There are not multiple endings like I had assumed, which isn't a terrible thing, I'm not crazy about having multiple endings on a linear story, it would feel like a bit of a cop-out. It does however affect replay value.
Gameplay 7/10 - More than anything, the beefs I had with Infinite were that they sold me on it being in the Bioshock universe but with a much more unique playing style. While this is true for the environment, it's not functionally very different from Bioshock. The system of powers was supposed to be quite different, but functionally it was the same (with the exception of the addition of traps). In fact the only noticeable differences in gameplay were the elements that were simply not there anymore. There are no big daddy's or little sisters (I'm not saying there needed to be, but there needs to be some sort of functional equivalent to that game mechanism). Also eliminated were hacking and photography, which to me was a bummer since I always found that to be a nice optional bonus to the game. There were not the level of power-ups/upgrades strewn about the maps to be found that there were in the first Bioshock. In fact, most of the upgrades to your powers were just meant to be purchased. This was a huge step backwards from the first Bioshock. I didn't fully explore the Infinite environment, but I explored it quite a bit my first playthrough, and it wasn't as satisfying as fully exploring the Bioshock environment.
Combat 8/10 - The combat, on the other hand, WAS better than that of Bioshock. They added a great new mechanic in the skylines that makes combat a lot more mobile, fast paced and open. They did change the way powers work by having them be left-right mouse instead of making you use one mouse button to switch between (similar to Skyrim). This was a definite upgrade. Unfortunately one thing to be mentioned is that there weren't as broad of uses for the individual powers like there were in the original, instead there were simply more powers. The oil spills and patches of water were all very small so localized they were inconvenient to use, unlike in the first Bioshock where I found myself frequently utilizing the old water/shock combo. It seems like the one thing they did do to make up for this was to build-in "traps" that you can place with your powers for the enemy to run in to. This was a great mechanic. (a useful tip might be to change your keybindings so that you aim with the right-mouse and use powers with the middle-mouse... it worked better for me).
Misc. n/a - I can't really give a score to the game based on the fact that it allows you to do simple things like change key-bindings... however it does deserve mentioning since, sadly enough, some games don't actually allow that these days. The original keyboard layout is very poorly configured, but it didn't take much to fix it and make it usable.
Overall 8.5/10 - I really enjoyed this game, the music was probably the most outstanding part of it, giving me chills at several points. The environment captures that underlying darkness of the first Bioshock but in a much more subtle way; with how bright and open this game is, it really doesn't have the intensely dark feeling of the first, and that's not a bad thing, it really worked for this game and fit the mood perfectly. The environment and tone were the biggest things setting this game apart from the first Bioshock, and definitely worth mentioning and applauding the developers for. Not having a save system was a real drag, especially for a casual play-through. I'm fairly anal-retentive about unnecessary killing, so at a few points I found myself having to restart a chapter because I upset the locals. They should have simply disabled saves for the hard-mode/1999 and allowed them for the medium/easy. The story added to the game, but it didn't deliver like the first Bioshock, but it would be asking a lot to ask for it to deliver on that level, the first Bioshock might have been the greatest video-game story of any I've ever played.
This game stands on it's own, although I think it will always be the little-sister (no pun intended) of the first game, I should clarify that I'm putting it to a very high standard by comparing it to the first Bioshock, I would still say it is one of the best single-player storylines out there.