I was going to make a thread similar to this later on this week. I haven't finished the game yet, but so far, I agree with you. It's a good game no doubt, but imo, it's nowhere near the 10/10 game of the generation some of the players & reviewers have been hyping it to be.
Let me start by saying the opening is fantastic - one of the best openings I've played. The atmosphere, the sense of danger, the emotion is all there. Graphics is also pretty great.
Gameplay-wise, it's alright, but I do have a few complaints about it mainly the AI and the ordinary infected. The normal infected provide no threat whatsoever; you can just hand-to-hand combat them to death. It takes away a lot of the atmosphere and sense of danger from it. The clickers are the only ones that do provide a threat, but after unlocking a certain upgrade, they don't proved a threat. You can just breeze through certain sections meeleing which also makes it a kind of boring. Better than sneaking around I suppose.
As for the AI, it's kind of dumb at times. In one occasion, a soldier saw me choking one of his buddies, and he runs back and takes cover. This action gave me enough time to sneak into the adjacent room, go around and get behind him, giving me the chance to kill him.
Story & characters are nothing to write home about.