Its a checklist the developers made for you. How is that anywhere near completing the game itself? I get this is my unpopular opinion but you dont need achievements to complete a game, or to track a game, or to prove you beat it. You can just play the game. Exceptions to this are things like SoT's commendations that actually give you unlocks. I exclusively only do the ones that lead to some in game reward item or something. Achievement score go up feels like a microcosm of billionaire brain rot.