Official last game you've beaten thread

It took me 103 hours total, but there are few things toi take into consideration (you wanted details? so I will give you shotload of details :D: I can talk and talk about this game :D:):

• I was focusing on game world, story, exploration, lore - thus I was playing at Normal difficulty. On it combat was not challenging, I only very rarely had to load previously saved game - usually when on exploration I'd run into a monster on ?? level (meaning much higher level than me - practically unbeatable). I believe playing on Hard or on Death March would force much more deaths, game loadings (and these take lot of time in this game) and would easilly add 5-10h of gameplay.
• I went with the flow of my decissions - accepting results, I never loaded and replayed whole mission just because I didn't like consequences my decissions led to. I accepted all consequences as in my opinion it adds to the value of the experience. I believe if you plan on replaying missions so you get deserved results and in the end ending you wish for you can easilly spent 5+ extra hours in game.
• I played all free DLC sidequests. There are 5 of them afair - they does not take long, and I only started playing them on high level, 33 I believe, just to finish off everything before I went to final missions so it took me maybe 1.5h to do them all, but if you play them on lower levels they can easilly give you 2-2.5h of extra playtime I believe.
• I finished almost all Side Quests I found (including also Hunts and Searches), I collected all pieces of Witcher Armor crafting recipes, including Wolf Set from free DLC. I only didn't finish 3 quests - one because it bugged (Triss got stuck and quest never progressed - it was quest with unenchanting soldier figurine with supposedly human being trapped in it), second - full Gwent card set - I played Gwent with every vendor I found, finished all Gwent related quests and Gwent events happening during other quests, just when I ended up with no full collection I wasn't going to go through every freaking vendor in game to seek which I didn't buy all cards from. Third was a quest (possibly a full quest loine) from Nilfgaard camp - after talking to general for the first time I had an option to ask for work, but I asked about quest I was currently on. He stopped conversation and told me to get lost. After that I tried getting quest from him several times but never again did I see conversation option - yet yellow "!" was at him all this time. As for time changes - I believe that if you decide to skip all side quests you will be missing a lot but you can easilly save like 30-40h from my playtime. Also my Gwent easilly took me like 5+ hours. I have no idea how many quests there are from this Nilfgaard camp and how much do they take, so idk how much playtime I lost from not doing them. If you decide not to complete Armor sets (I suggest you do complete them - it's the best equipment in the game) you can save yourself ~5h.
• I finished all "?" question marks in Velen and Novigrad areas. The ones that were too high level or in locked areas I was doing later on. On Skellige I left ~20-30 unfinished question marks - all at the sea - because 90% of them were just chests in the water - containing loot I didn't need anymore (it was below my level), were offering no experience points and were taking a lot of time that was very very boring (you use your boat, travel 5 min to location, swim for 1-2mins to get loot and kill all creatures with crossbow, get back to boat and rinse and repeat - next ? same story and there are tens of ? on Skellige - all the same). If you decide to skip all ? in Velen and Novigrad you can save few hours. If you decide to do all ? you will need few more hours (and they take more time than Velen/Novigrad ones - boat is slower, you can use much less Fast Travel.

TL;DR:
It took me 100+ hours to Almost Complete the game on Normal. If you want to rush through story on Easy I believe you will be able to do it in 30-40h. If you want to complete everything inclkuding stuff I found unintresting or that bugged for me, do so on harder difficulty or replay missions to change your choices and consequences - I believe you will need 120+h.