As always, the key to the final area is to balance the forces involved. The Chauruses inside the enclosure are usually more than a match for the Centurion Master, so most of the Falmer outside should be eliminated. Maybe leave 1 or 2, depending on their level/tier; the Centurion levels up along with them, of course, but not quite at the same pace. If you've levelled high up enough for there to be a Shadowmaster in there, it could very well wreck the Centurion. In this video I was able to gauge the balance well enough, I think.
Mercer Frey is quite possibly the worst thief alive. Come and see how bad this gets. He's a clown.
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HKLCondor2838 presently has 12,516 views for The Elder Scrolls V: Skyrim across 168 videos, with the game making up over 3 days of published video on his channel. This makes up 42.36% of The Elder Scrolls V: Skyrim content that HKLCondor2838 has uploaded to YouTube.