On this question someone recently gave me an up vote (yay!) which puts me currently at 10 upvotes. This awarded me the "Nice answer" badge.
Answer score of 10 or more. This badge can be awarded multiple times.
First to answer and accepted with at least 10 upvotes. This badge can be awarded multiple times.
Now on this question I was the first (only) to answer, and it is the accepted answer, and it has at least 10 votes. What hidden requirement am I missing for the Enlightened badge?