Instructions & read.me

Problem/Motivation

I'm very interested in this module for a project I'm working on, but it looks like instructions and read.me are outdated. Is there a more up-to-date documentation somewhere?

After installation and activation on Drupal 10+, I have a new "Achievements type" item in the menu that lets me add new achievement types (not documented?), and a page at /admin/config/people/achievements/admin (which is empty besides the "Save" button).

Also, I can't find the Optout and Pointless submodules that are described on the projet's page.

Thanks for any help :)