The game has very sound combat, even if you can't make Kratos a beast like you could in GoW 4. Not everything works well imo, there are some situations where combat isn't as flawless and doesn't really make sense. I liked playing as Atreus, didn't like that Kratos is so very slow compared to his enemies.
The story of the game is messy and lackluster. Too much emphasis has been put on character acting and not enough on the narrative itself. The game isn't about Ragnarok, but more about Kratos and Atreus and how they go about doing it. Honestly, when I bought the game, I expected a lot more thrilling battle and less drama revolving the expected event (Ragnarok). Some of the story also doesn't really make sense, I have the feeling a bit of the plotline was simply forgotten by the studio.
It's a nice adventure game, not necessarily the best RPG game. It doesn't offer much replayability, but I expect Santa Monica to add a NG+ mode soon. Maybe that will offer some more exciting features. As of now, the game is really kind of "meh".