There is no magic or secret about playing the game on master level...the enemies just have higher damage output and bigger health pools..thats it.So you just have to do enough damage and avoid taking too many hits,simple is that.
So essentially, just making every encounter with a bandit feel like an epic boss. No thanks.
I always go for the middle difficulty on TES/FO, simply because I like to do 1:1 damage and take 1:1 damage. I don't like the idea that they can hit me for 200% and I can only hit for 50%. (Or whatever the numbers end up being)
Lowly bandit, should be a 1-2 hit kill for the Dovahkiin (whether your character knows it or not, they ARE the dovahkiin).