I have run this 4-5 times under the 20 min. mark, and still have the feat as incomplete----???? last time was 13 mins. and---- nothing. devs? and yes, I am running the "Hard" mode, unless there is a 3rd level I am unaware of,...
It's been bugged for a while. There has been no mention of a fix or even acknowledgment of the issue. Just like the high-flying bounties.