I’d like to know this as well. I’m even willing to send you a donation in exchange for an update (especially to fix the recurring ‘sign in’ achievement issue from happening every time.)
Thank you for all your hard work!
guys, hold on your breath, a big rewrite is under going on Github. I’m stunned by the totally new structure and possibilities, beside lots of hooks that we’ve been hoping for, the new Achievements provide max freedom for customizing, we can even register our own post-type and have it managed by Achievements though I don’t understand in what kind of situation I might want to use another post-type.
I can’t wait for the new release, keep doing “Fetch” everyday, can see Paul has been pushing new stuffs in there everyday.
Regarding the sign in bug. I really don’t have any good ideas how to fix it, which is the current problem.
And the new version; as @imjscn says, it is living on Github https://github.com/paulgibbs/achievements but still has some way to go. I took a week off work last week to work on Achievements, so I made a lot of progress, but there’s still a lot to do 
@DJPaul,
I can’t figure out this one– setup_current_user
I feel it must be a great thingy, but I pull my hair hard, still have no clue. My wildest guess is– this is where we can set current user as teacher or player or…, Could you give a hint?
Thanks for the info, guys! I’m looking forward for the next release! 