Monooboe and all other achievement hunters
Steam has responded regarding the achievement rarity list
steamcommunity.com
Sounds like they haven't done anything to the achievements since it was introduced to Steam. I hope that they do more with achievements, more stats hopefully
Steam has responded regarding the achievement rarity list

Rarest Achievements / Showcase Glitched? :: Help and Tips
Hi, sorry we haven't replied sooner.
Some data got corrupted in the system that tracks achievement percentages. While we have backups, it's difficult to determine precisely when the stats got reset, or how many achievements were unlocked in between when the backup last ran and when the numbers got reset. The system has been mostly untouched since 2007 and runs on an old database that we don't really use anymore, so it's overdue for an overhaul.
Given all that, we are working on building a new system for tracking the global achievement data. This is almost complete, after which there will be some time while we count up all of the achievement unlocks again (there are billions and billions). Once it's caught up, we'll switch over to reading the numbers from the new system, and the unlock percentages should return to normal.
I'll keep this thread updated on our progress.
Sounds like they haven't done anything to the achievements since it was introduced to Steam. I hope that they do more with achievements, more stats hopefully
