This game is absolutely my game of the year. There are quite a few bugs from what I've read, but they are being fixed quickly. I'm just getting to act 4 and haven't actually experienced anything except minor display bugs myself, so I can't really comment on their severity. Outside of the bugs, the game itself is incredibly deep. The class options alone had me sitting around reading up and deciding what to play for a couple of days before I actually dug into the game. The story is well written, compelling, and presented in a way that's quite refreshing compared to other CRPGs I've played this year. Our companions are all lovable in their own way and have excellent dialogue and their own interesting side stories. Pathfinder: Kingmaker has an absurd amount of content as well. I'm almost 100 hours in and approximately half way through the game. And that's not even counting replayability, which I'm already preparing for a next playthrough. Overall I'd say that if you enjoy story driven games you absolutely cannot miss out on this one. Don't let the potential bugs keep you away, it's too good to be overly concerned with some glitches here and there.
I just finished my first playthrough of Tyranny and I am exceedingly pleased with the quality of the game. I would recommend this game to anyone who enjoys story based games with lots of tough decisions to make. The combat is solid and the magic system is fantastic. If you're looking for a challenge in combat, definitely play Path of the Damned w/ Expert mode enabled. I played on Hard w/ Expert mode and by the middle of the game, the fights were fairly trivial. I plan to start a new playthrough on Path of the Damned soon! I don't really have any negative things to call out. I thoroughly enjoyed the game for what it was. Some day I hope to see a game with the story depth and decision making of Tyranny and the combat + vastness of Divinity: Original Sin 2. But, I expect I'll be dreaming on that for some time :)