Searching the back-end to create a language override for COM_EASYSOCIAL_BADGES_APPLICANT_TITLE returned no hits.
Funny thing is when I look at Achievements in the front-end, I see this is "Applicant".
However, when I look at the results returned from getBadges(); I receive string(37) "COM_EASYSOCIAL_BADGES_APPLICANT_TITLE"