You can fly through it if your used to these franchises. I have always been a player that explores all the side stuff so I could have halfed the main story arch. Thing is I just found it not a chore, I think there was one region which was a bit naff (swanburrow) the rest were fine!
I only played the first, enjoyed the story but it got repetitive and the game was a chore to just see the ending. If I run out of things to play or feel like something different then it's always there. If I'm still interested after 10 hours, even better. Thanks for your comment.