I would love to know...
You’d also have to find out how many people actually tried for the various achievements.
Otherwise the data would be inaccurate because of people (like me) getting the mini or meta achievement and then stopping.
“Life’s a journey, not a destination.”
Well it’s no where near accurate, but there are 2 posts where people are posting when they beat Liadri and when they get the Light up the darkness achievement.
https://forum-en.gw2archive.eu/forum/livingworld/jubilee/Liadri-Slayer-Club/page/4#post2639141
It’d be “interesting” if they did something similar to steam achievements where you could see what % of players have that achievement, but after 10seconds I think I’d stop caring. I don’t play this game to see who has the biggest virtual sword. I’ll try for as long as it’s fun, and if time runs out or I just don’t want to try anymore, I’ll move on. I don’t see why it matters what other people accomplish, as it doesn’t effect my playing in any way.
I just assumed the OP wanted to know because he/she thought the Gauntlet was too hard and only a tiny proportion of players would even be able to get to Tier 3, let alone complete all the achievements and this would be a way of proving that.
“Life’s a journey, not a destination.”