I'm Assuming we need to start over to get all the achievements or will loading an already 100% save get us the quest and node secrets?
Viewing post in Achievements + Steam Release Coming comments
Its perhaps best to start over, as some people are reporting issues with using old saves. While I did try to grandfather in as much as possible. I need to look into re-fights with Elspeth again to make it all possible as I think that's the only sidequest boss that you can't refight and therefore locks the queen scenes. There's a few other things I need to look into also. Will maybe have an update to some extra things next week. But if you want to do stuff now, yeah new save file is the best thing.