The walkthrough in OP is at least somewhat out of date, but knowing by how much beyond "multiple versions behind but still more complete than incomplete" would require a fair bit of changelog scouring.
I mean, you could just ask. For the record, my last complete playthrough was in v0.2.43, and my guides were roughly accurate to that version.
That said, I've been keeping up with the thread, and it seems that the majority of content that my guides cover hasn't been significantly updated since then—taking raeve keep and completing the orciad should still be entirely doable with my first guide, and aside from the village bug finally being fixed recently, the guide for getting ahead early should still be relevant. Similarly, the map hasn't really changed since I first played well over a year ago, so the map I posted should also still be fine. I do intend to get back into a newer version at some point, although this is slightly complicated by the fact that there's no longer a "current" non-pirated free version, but we'll see. I may wait a few versions just so the majority of the bugs that need fixing and changes that need to happen to the Rastedel arc are finished, so that if I decide to update my guides with Rastedel-related info, they'll stay pretty much accurate for the foreseeable future.
Is there a good guide for this? and is the walkthrought in the OP recent? I want to start playing this but it seems really complicated if a LOT of outcomes depending on events, some random or that you have to find.
I wouldn't really consider what I wrote a walkthrough, more of a guide to get through the parts that people were asking about most back then. That said, all my guides are completely outdated for anything Rastedel-related other than just finding it, since that content is new since the last time I played (a long time ago). The rest of it should be pretty much fine, though, I don't think that content has really changed very much since I wrote those guides.