Can anyone tell me what the rules are for an Enlightened Badge?
Although I have an accepted answer with 11 up votes I still haven't received this badge.
There's another answer with the same timestamp as yours.
Looking at the answer id numbers, yours is 615352 the other one is 615346, so it looks like the other answer was first by a few seconds.
You only get the Enlightened badge if yours is the first undeleted answer.
Your answer was not the first to the question. It needs to be for "enlightened".