I've been searching for any sort of documentation regarding how to create your own achievements. For example, an achievement for sharing an article on a social network, or another achievement for sharing an article on multiple social networks. Or an achievement for clicking a on-site "Like" button (nothing to do with facebook).
I'm not after someone to make these for me but instead point me in the direction of some code I could modify to create my own achievements that aren't reliant upon supported plugins.
Thank you kindly and mad props to Paul for one hell of a good job!