Just got this yesterday. I'd have to say it's the best Bio game so far, and more polished than the others. I did some file edits to remove bloom and all the blur, as well as raising Detail Mode from 2 to 5. According to the file, on max settings HDAO is enabled and it's running at 16x AF. The benchmark tool is kinda nice too, very detailed info. I'm averaging 87 FPS overall. The art design and nav abilities in this game really make it interesting.
I only have a few minor nit picks.
1. At 1080p, the in-game and menu text is very small.
2. You can't tie the nav aid to optional objectives like locked trunks you've encountered, which are hard to relocate
3. Some upgrades seem limited to certain weapons. I've yet to find a clip extender for the machine gun
4. Even with the brightness set as recommended, a lot of the indoor areas seem too darkly lit
5. The gameplay menu is more confusing than previous games as far as swapping out shortcut vigors and such
6. No hacking for safes, turrets, cameras, etc. You only need find lockpicks, and even then, Liz does the work
I honestly didn't think I would like having Elizabeth as a tag along at first, but she's kinda cool really. She never lolly gags, always has no trouble finding you, and tosses you money, ammo, and even weapons sometimes. She can also run pretty fast, and likes to run a lot, but who wouldn't after being kept prisoner in a tower for years. Sometimes Elizabeth's reaction and voice acting seems oblivious or forced, but I'm at a part where I think she was previously hiding her feelings to catch Booker off guard at the right time.
Some effects are very cool, and who wouldn't like mini bosses like a mechanical George Washington with a US flag for wings firing a Gatling gun as he spews patriotic banter. I really like Shock Jockey, it instantly immobilizes anything mechanical, and a shock combined with shotgun blast will pop regular enemy's heads off while electricity shoots out their neck.
