The only gripe I had with this quest doesn't have anything to do with it. Got hit with a 90k error right after finishing it, felt like I lost a year of my life. Thankfully when I managed to get back on 3 hours later it started me off at the cutscene immediately afterward, so that was a relief.

As for the quest itself, I must be built different or something because I didn't get detected even once. All you have to do is run in a wide berth around enemies because their line of sight is actually pretty narrow. Once you get past the stealth segment it's just a matter of dodging aoes and pressing your buttons.