QUOTE(Mako the Irrelevant @ Feb 19 2010, 12:20 PM)

From what I played of it, it was pretty amazing. I don't understand folks criticism in the way of; "We've been to rapture before, BORING!" yet eat up games such as Call of Duty, Halo, and the like, which are notorious for their 'been here done that' style of gameplay.. Just seems like a petty issue. The game is fantastic to look at, the combat is far smoother (the new plasmids are wonderful, updates to the original Bioshock Plasmids are pretty sweet as well).
It's just a great game all around, but of course there will always be haters, for one reason or another. All in all, they usually give the same trivial issues, it doesn't have any glaring flaws that subtract from the game-play or enjoyment. Just variations of taste.
Being in halo or call of duty, you can have many different locales to place different levels of the game. Space, earth, alien planets, spaceships, indoor and outdoor environments, even different kinds of weather can effect the gameplay.
But when you are in an underwater city, the environments are pretty restricted, I found the environments of the first one pretty repetetive, so I can see where people are coming from.