Clear Karma and Achievements for all Users?

You can un-assign achievements from a user by going into the wp-admin > Users > [edit user], and scroll to the bottom of the page. There will be a couple of options to set the user’s karma points total, as well as checkboxes for removing achievements from that user.

There’s no built-in way to clear karma points for all users. This sounds a bit interesting. Do you have a specific requirement in mind for such a feature?