OMG just play on easy mode! Honestly, I always felt the "fight" stuff in Bioshock and Bioshock Infinite was a lot less harder than popular shooters. It's not really an FPS the way Halo or Modern Warfare is. It's more of an interactive movie. all very story-driven. But, yeah, they made easy mode just for playing the story. I played on Medium since I was already familiar with the series.

The first Bioshock game was the game I learned to use the Xbox controller one because the story was so damn good I could not stop playing until I found out the mystery of the city. :)