That's nothing. Come back when you have both of the True Crown Collector achievements in MHWo. Those achievements alone take longer than some entire games unless you have godly RNG. Crown hunting has always been a thing for the Monster Hunter community, it is basically our autistic version of shiny hunting in Pokémonbut with less terrible rates needed, however making it an achievement though was evil. The hard part isn't just getting one of the crowns per monster, it's the fact that you need two of them for each monster and you can only get one at a time since they are mutually exclusive for which you can get in a given hunt normally and the achievements are specifically for each of the two different sizes. One for large and one for small. It doesn't count unless you have the gold crown either, so silvers are just reminding you that you got cucked. You'll get a good number of them during the natural gameplay and grind of the game at least, so they are actually worth leaving until the very end since most of the work will happen organically. Still, I think it is around 130-ish crowns needed. A few monsters aren't needed, but you are still going to be at it for a while. Realistically getting both of those achievements is an exercise in mastering the game for every monster. People ask why I have dozens of hunts against some low-level monsters, it is the crowns.
There's also the really esoteric achievements like getting the treasures, asystem I didn't even know existed until I read the achievement list, I've still never figured out how to do so on my own so if I ever decide to do that one I need to look it up and I'm getting pretty close to 2,000 hours in that game. Capcom is evil with their achievements.