So, I completed Pillars of Eternity before I'd originally wanted to when I realised (after 150 hours) that Paradox Arctic totally fucked the achievement tracking on Xbox with its update last year.
However, it turns out that you are given an even rarer achievement than you would otherwise get for doing so by finishing it with under 250 kills. I don't really understand how that's possible anyway, but whatever. If you're looking for easy achievements from this game, forget it.
I was primarily playing it as a backstory primer for Avowed, but it's kind of soured me on diving into the sequel. I think you can gleam enough worldbuilding by just watching a synopsis of this first game online and play Deadfire first instead. It looks to be miles better, from encounter management to graphics and Avowed won't be set in either parts of Eora that the POE series was set (which is a good thing because they are both the arse-end of nowhere).
Apart from the achievements, my main complaint with the actual game is that the levelling is absurd. You spend ages amassing power and levelling up, then hit a brick wall when going to one part of the map, or fighting dragons which have nothing to do with the actual story. So you then finish the entirety of all of the remaining (non-definitive edition) quests, bar the point-of-no-return end game and return to this area and find that you still aren't powerful enough - when there's absolutely no enemies left on the entire map to farm XP for. So you have to go do companion side quests to level up, some of which totally aren't straightforward and require spending weeks in their company.
Overall, I was impressed with the depth of the characterisation and some of the dialog options could be quite amusing, but the story was a bit up it's own metaphysical arse and I'm glad it's behind me.
Now i'm playing Empire of Sin. What a great game this is. No more pacey than POE but a lot more fun, IMO.