I just finished it. Didn't quite get all the shrines, dens etc. but came pretty close and did all the primary sidequests. Awesome, awesome game and completely worth the full price tag.
Pros:
1. It's easily the best looking game I've ever played. At first I thought this was just due to the feudal Japanese setting but as I got deeper into the game I realized that every single little thing in the game looks incredible. Each of Jin's armor sets is incredibly detailed and looks phenomenal, the facial animations, the sword kits, everything was done with an incredibly high level of care and detail. It's the only game I've ever used the camera mode in and I think I'm going to get one or two Ghost of Tsushima displates for my room.
2. Strong main storyline and awesome ending.
3. Really solid combat where both stealth and brute force approaches feel equally fun and viable. Also the difficulty of the combat rises at an appropriate rate. Early in the game I hardly ever used any of the gadgets or the skills that utilized resolve but as the enemies got further it forced me to vary up my approaches and start using everything available.
Cons:
1. The supporting cast and the side quests are not particularly memorable. None of Jin's team resonated with me except Yuna and maybe Masako, a little bit.
2. The open worldy stuff gets repetitive as in every game of this type. Fox dens, random encounters just traveling through the world definitely got a bit tiresome.
3. Could have used more variation in the enemies beyond "spear guy, big guy, shield guy, sword guy, arrow guy".
It's a 9 out of 10 for me. It's one rung below The Witcher 3 (which had much better characters and sidequests) and God of War (much better combat) but one rung above Star Wars Jedi: Fallen Order and Horizon: Zero Dawn in terms of single player games I've played recently.
