I'm something like five hours in, just got the
vigor. While I enjoy the way combat feels this game is far too easy even on hard. I guess I should have punched in the code for 1999 mode or something. My weapons simply deal far too much damage and the vigors have too much of an impact on enemies for how plentiful resources are.
Most of the time I feel more like I'm scrounging around rather than exploring, because the game is extraordinarily linear. It feels too easy to read the games environmental visual cues. I almost always know where enemies will pour out from, and it's honestly pretty boring to always have them enter what feel like fabricated arenas from the outside. Rarely do I feel like I'm coming up on enemies who were going about their business. The world doesn't really feel used by its enemies, just its passive inhabitants. I guess that's where I preferred the original Bioshock.
I'm willing to be a blasphemer or whatever, but I was much more impressed with Bioshock 2's encounter and level design.