Wow. That DLC was a piece of shit. Don't buy it.
It has nothing to do with the darkspawn like the trailer implied. It answers a mystery we didn't even know existed and it creates more questions. It's incredibly short, less than 3 hours. It's also artificially hard. It's a grind to get through the enemies who all have like 50,000 health (while my level 27 Inquisitor has around 1000). Without the grind it would have probably only taken 45 minutes to finish.
Dude, I call BS. While I could see beating the DLC in 3 hours if you rushed through everything and skipped every dialogue scene you could, 45 minutes would be either impossible or some serious speed run shit.
You're entitled to your opinion but giving people bad information is not cool.
PS: For comparison sake, I did the DLC at level 26, enjoyed all the dialogue and did all of the side missions and it took me about 8 hours.