I was having to work too hard to defeat some enemies (e.g., bosses, shield-bearers), so I turned the difficulty down to easy. Maybe I am just not very talented at these types of games, but I'm enjoying it more now on easy. I'm in it for the story and atmosphere (visuals, sound) more than the combat anyway. The combat does feel more satisfying than I expected, though, and it looks cool when you go into slow-mo.
I've also gotten a handle on the visual puzzles and the way the levels are designed. I had some trouble with that in the first hour or so, especially with the god of Illusion area. I just needed time to get a feel for the game's language. It does some things differently, and it took me a while to "get it."
I'm in a groove now, enjoying the game. Nice to see all the positive impressions and good press.