The first version of Achievements is almost ready for release. However, BuddyPress 1.2.6, which Achievements requires, isn’t. I will not be releasing Achievements until BuddyPress 1.2.6 has been.
Consider this a private beta period. If you want your hands on Achievements now, and know how to use SVN and how to obtain the BuddyPress 1.2 branch (this will become the 1.2.6 release), leave a reply here and I’ll send you the details.
I apologise for any inconvenience this delay will cause your projects, but I’ll be using this extra time to continue improving Achievements.