TrueSteamAchievements has this (in Easy Achievements). Source: 7 months ago

It does happen perfected games get new achievements added. Maybe that's what happened to your missing game? It's a real drag to make a separate list to compare Steam's list to, but maybe it's worthwhile signing up for something like True Steam Achievements if it's important to you. Source: over 1 year ago

OK looks like they've been picked up by truesteamachievements.com and some people have them unlocked. Source: almost 2 years ago

A other way would also be to go on: https://truesteamachievements.com/. Source: almost 2 years ago

Whether 100%'ing a specific game is worth it or not depends entirely on your preferences. I wouldn't put too much focus on achievements unless it brings you joy. I can't give you recommendations since I don't know your tastes. I'd simply pick a game you like. This website can help you track your progress, and it also has guides for most achievements. Source: almost 2 years ago

Almost all (if not all) CN and KR novels are on there, what the site lacks are some japanese LNs which you can find in other places like lndb.info however it doesn't have reviews just the info. Source: over 2 years ago

I found this while looking through lndb.info. If this has already been posted I can take this down. I like this series arguably more than the main series, so I was very excited when I found this. Source: over 2 years ago