» Thu Dec 15, 2011 5:09 pm
OP, the idea of the assassin is to kill them in either 1 or 2 sneak attacks with your dagger. Ideally you should lose very little or no health at all as an assassin, because you kill them without them landing a single strike on you. From the sounds of it, your sneak attack damage barely hurts them, and you then have to kill them off "like a warrior" in a long open combat.
If you haven't gotten the necessary equipment and perks to make your first dagger strike lethal, you can try the following:
1. Sneak attacks from afar
You mentioned that you had to kite. That is not the way of the shadows.
What you should do is sneak attack with an arrow, then move away from your starting location.
Wait till the enemy stops searching for you, then go back and sneak attack him again. Then move away again from that spot.
Rinse and repeat till he dies.
Unlike in Oblivion, if you do a sneak attack, you are not yet detected. The enemy has to find you first. That is why you have to move away from the spot where you launched your arrow.
2. Don't wear any armor.
If you find that you are being detected too easily while sneaking, it is because your sneak skill is low and it is not enough to offset the noise that your armor makes.
Assassins shouldn't get hit, so you can just wear normal clothes to sneak around.
Once you find that you can sneak very well, you can then consider using some armor pieces.
3. Perks and equipment for future improvement.
If you are not doing well, chances are it is due to you not getting the right perks.
If you are being detected too easily, you just need the Stealth and Muffled Movement perks, and just a higher sneak skill.
If your single dagger strike isn't taking away a lot of their health, you just need a stronger dagger and the Assassin's Blade perk (x15 damage multiplier for dagger sneak attacks!) Deadly aim increases your sneak bow attacks from x2 to x3.
http://www.uesp.net/wiki/Skyrim:Sneak
At the start, just sneak attack with a bow.