This wiki is a read-only version of the Stardew Valley Wiki. The official editable wiki maintained by ConcernedApe can be found at stardewvalleywiki.com
Achievement data is stored in <tt>Content\Data\Achievements.xnb</tt>, which can be [[Modding:Editing XNB files#unpacking|unpacked for editing]]. Here's the raw data as of {{version|1.35.361}} for reference: