@Greyshanks;
I wouldn't recommend a DiD run with the vampire build described in this thread though it can be done. I haven't died often yet and when I did it was my own fault and could have prevented it. I don't really see the point though, DiD/hardcoe makes you play way to save. The fear factor is good but when you get one shot there's plenty of fear to go around already.
Going max armor and max resistance every game has become boring for me. Basically me playing this 40 HP vampire is a way of getting that DiD feeling without still abusing the imbalance of the game.
There are mainly 2 groups of people on these forums who claim master is either too easy (yay crafting skills) or too hard. I try to walk that fine line in between and limit myself just a little. The maces over daggers is a good example as explained earlier. As far as the armor penetration go, though it's true there aren't that many armored enemies, maces still have the highest base value thus making them best for a sneak attack alternative.
If you do decide to make a vampire character as well, let us know how your experience goes!
And just for giggles: A few times how I've died:
- With -100% fire resistances (vampire) and -100% magic resistances (Apprentice stone), turns out fire traps are quite deadly.
- Arriving in Whiterun. Not yet vampire stage 4 but some random mage at the gates challanges me. My RPing responce is "Oh hell now!" and kindly decline ingame yet he attacks me anyway wtf... In a DiD run that might have gotten me by surprise.

Stupid guard didn't do anything about me getting murdered in broad daylight either. Don't worry, I relieved him of his duty.
- 2 mudcrabs, lol. Was over confident, missed a power attack and paid the price.
- Main quest dragon fight at the watchtower. Epic battle when you have backup archers. Running around hiding behind stones. Sneaking up to the dragon trying to avoid the flame breath. Turns out the dragon was defending her pooper quite vigorously with a deadly tail whip. Must have had some bad experiences with Alduin me thinks..