If a learner completes all the Silver Badges they will unlock the Silver Star Special Achievement, if they complete 50 (or more) Bronze Badges they will earn the Badge Champion Special Achievement.
The Silver Star Special Achievement is awarded to validate that they have become an official iDEA Silver Award Star by winning 500 Silver points and completing all five Quests.
The Badge Champion Special Achievement is awarded to validate that they have completed a minimum of 50 Bronze Badges with iDEA.