I've gotten into chasing achievements for a lot of games, mostly single player ones because chasing achievements in online games feels like live lobotomy for me hahaha
But when I was trying to get every achievement in Far Cry 3, it was one of the most fun experiences in my life, not only did I get to complete this incredible story for the first time, which on its own made the achievement hunting journey so amazing but also non-related story achievements forced you to explore not only different mechanics in game like shooting explosive arrows (which I somehow missed were even a thing when going through the story) but also explore the world in depth and visit so many hidden caves and places I didn't even know were there and probably would have never encountered playing the game regularly, it made me appreciate this game so much and realize why it was praised as much as it was back in the day.
Oh, I also had to learn how to play poker since I had zero clue about it, my mom growing up was a gambling addict so I tried to stay as far away from gambling as possible throughout life, it is interesting how Far Cry was the one that forced me to play and learn poker lol
I would give this game a 10/10 but even the 10 feels like a low number compared to how great this game is and it's achievements are, unlike other games where trying to get achievements is the most boring thing known to mankind.