I'm the opposite. I finished it and didnt like it. I prefer Bioshock 1 or 2 compared to this. I hated the ending, though it was tacked on. The only thing I did like about it was Elizabeth. She is a great sidekick and actually does something useful and helpful unlike some sidekicks in COD or Battlefield games where they do completely nothing and are totally useless.
I hated the rails and didn't use them unless I had to. I thought the graphics was the same as B1&2. Gameplay is identical to B1&2. 5/10