I've died a few times but adept doesn't seem tough as long as you do things right. I'm tending to stealth and snipe just at present - Max out bow so I can forget about the skill. Anything too close and I look at switching to Elf Knife & BBQ Streamer

- The trolls were easy, though I did die once exploring.some cave below a waterfall. Darkspire, dark something anyhow. It's east a way from Whiterun. My toughest fight so far was probably a boss bandit in a mission. The terrain enables him to get close if you attack from the south-east as I did which is bad news if you're only using a bow, as I elected to. Far easier if you come from the north and cross over the bridge I'd think.
If it helps I'm level 8 though I've another 8 levels of experience gained but not taken and no perks spent yet.
Correction. My toughest fight's been against a couple of giants. I plugged one with arrows running backwards as I did so and saw his health drop a smidgeon before he closed the gap and clobbered me whereupon I went way way up and then went splat on the ground . Gave up after a few epic fails. Guess I'll revisit when I've better weapons\armour\health...