Witcher 3 was a fantastic game, beyond its years. I don't play many open world RPG's in a year, and I'm glad I made it that one. It was the first time in a very long time that I actually gave a shit about what happened in side quests, and found the lore interesting enough to follow. Geralt may not be the most "characterful" character, but he is certainly an interesting one. The plots surrounding the people he encounters, and the monsters he hunts are just as intriguing. The graphics and physics are beyond compare. The controls required a little bit of tweaking, but I found the swordplay satisfactory, though could have lent itself to a bit less grace and more weight, in my opinion. The books describe him as a bit of a ballerina with the steel so I accept it as par for the course.
I did have some gripes with the game, though they were small enough to deal with.
1) Inventory system was a bit of a hassle. But I'm not really sure how much it could be improved, given the amount of stuff you can craft. Weight limits were a bit silly to deal with, but that's just me, and its present in most real-time RPG's.
2) Controls were clunky as hell in the default mode. I'm really glad they added the alternative, because even getting into a doorway without ramming your head on the wall was a challenge.
3) Sometimes, the quest and dialogue options didn't make much sense, or were frustrating in what you were not able to say at a time where it was needed. Sorry, I can't pick any specific examples right now, it's been too long. But times included dialogue with the Baron's daughter, once with Ciri, and once with Keira. But, I guess that's also because you're playing Geralt, and not your own role.
4) The game is just too damn big. Story is a decent length, but there's just TOO much to do. That's fine I guess, because it's mostly quality, other than the treasure diving and blueprint tracking. Just a bit overwhelming. It kind of put me off a full second playthrough though.
5) Final boss battle. Not going to spoil it, but it was not that great.
Other than that, I really didn't have any issues. Except maybe lore nitpicks, like Yennefer. God she was annoying, and I wasn't sure who I'd rather smack upside the head sometimes, Yen, or Geralt for still feeling for her. But that game delivered many fascinating and enjoyable hours, where I actually wanted to progress just to see what happened in the branching storylines. Yes it was grim, but also humorous, and absolutely gripping at times. You did have to pay attention to get the best of it though, which made it a tad tiring on really long stretches, with the sheer size and depth of it. 9.5/10