Awarded: May 18, 2016
Awarded to active, helpful and overall awesome members.
Reason: For constantly whining about wanting to get it. :-p
Awarded: Dec 4, 2015
Awarded to members who've reached high ranks.
Reason: For reaching rank 500. Or, in your case, 600!
Awarded: Dec 3, 2015
Awarded to members who have the most "likes".
Reason: More than 2.700 likes at the moment of awarding the medal!