Create and use achievements easily with this editor extension.
This extension allows you to easily create achievements in the Unity editor as well as a system to easily use the achievements in your scripts. The only thing needed is to create a variable per achievement that will be checked by the extension to see if the achievement has completed. The extension will also report progress and unlocked achievements through an event based system.
Documentation
Update V1.1
* Achievements can now be categorized
* Window usability improved