Steam/Achievements

Achivement Storage

C:\Program Files (x86)\Steam\appcache\stats
  UserGameStats_[AccountID]_[AppID].bin

References: https://github.com/gibbed/SteamAchievementManager/issues/500

Steam Achievement Manager

Steam Achievement Manager
https://github.com/gibbed/SteamAchievementManager

Steam Achievement Manager (SAM) is a lightweight, portable application used to manage achievements and statistics in the popular PC gaming platform Steam. This application requires the Steam client, a Steam account and network access. Steam must be running and the user must be logged in.

This is the code for SAM. The closed-source version originally released in 2008, last major release in 2011, and last updated in 2013 (a hotfix).

The code is being made available so that those interested can do as they like with it.

There are some changes to the code since the last closed-source release:

General code maintenance to bring it into a more modern state. Icons have been replaced with ones from the Fugue Icons set. Version has been bumped to 7.0.x.x to indicate the open-source release.

Download latest release
https://github.com/gibbed/SteamAchievementManager/releases/latest

Steam Achievement Console Commands

Launch Steam with Console with:

Win + R
steam://open/console

Or

"C:\Program Files (x86)\Steam\steam.exe" -console

Get the AppID using SteamDB.

https://steamdb.info/

Get the Achievement ID also on SteamDB under the Achievements Section. You'll see a human-readable name on the left and the API Name on the right, which is the internal ID (often all caps with underscores or camel cased). Eg. BIG_SCORE_ACHIEVEMENT or BigScoreAchievement

Console Commands:

Unlocks a specific achievement:

achievement_set <appid> <achievement name>

Example:  achievement_set 4000000 BIG_SCORE_ACHIEVEMENT

Locks a specific achievement:

achievement_clear <appid> <achievement name>

Example:  achievement_clear 4000000 BIG_SCORE_ACHIEVEMENT

Resets all achievements and stats for a game (use with AppID):

reset_all_stats <appid>

Example:  reset_all_stats 4000000

NOTE: After using any of the above commands, make sure to close Steam completely, including from the system tray, to ensure the changes take effect.

Reference Video:

How To Reset Steam Achievements
https://www.youtube.com/shorts/rceGYwkRKj0