Just finished playing the last God of War on PC. I'd never played anything from the series, as I've never owned a PS. I love all the mythology. My Norse mythology knowledge is pretty good (thanks Neil Gaiman!) so I was pretty well oriented in the world.
I really liked the growth of Atreus. One of my co-workers said he was annoying. And, yes, he becomes irritating after he discovers he is a god but that arc resolves itself quickly. I really liked the twist of finding out Atreus is Loki. And there was definitely foreshadowing that was great to look back on (e.g. Baldur's mistletoe vulnerability being exploited by Atreus and Freya's prior freaking out about his arrows and replacing them - unbeknownst to her that he had one arrowhead left from Kratos' repair of his broken quiver).
I tend to always play first run-throughs on default/normal settings. It dawns on me that a lot of games stopped using the term "easy" for the lowest difficulty and now use something like "story" mode. I guess it makes people feel better.
Anyway, the normal setting was fun but not really all that challenging. There was only a couple of areas that took me multiple tries and that was usually early on when I tried to take on enemies I wasn't ready for (e.g. realm tears) or when I was experimenting with different skills. There was definitely a time when I was using a variety of moves, not because I needed them to defeat certain enemies (with some exceptions - shield, frost enemies, etc.), but only because it was fun. The Valkyries were the only really difficult enemies (I only did 2 of the 8 and gave two others a couple tries, but never returned to them) and they weren't necessary for story progression.
Overall, great game. Beautifully rendered. Lot of care put into the story. Fighting system was diverse and allowed for a lot of variation and real-time tactical decisions. I really hope that Ragnarok is released on PC.