I think as an assassin you should be as mobile as possible, so that you can kite and stay in/out of range as you please. There are several options to go here: heavy, medium or light armor. Instead, you should get more of this by enchanting your armor, this gives a much greater buff and you will notice the difference, unlike with attribute points. Health is much more useful in a battle than the little extra magicka or stamina. The best way to spent your points in my opinion is 1(magicka)/4(health)/1(stamina).
Still, placing a lot of attribute points in magicka/stamina won't change it that much. You will find out that most of the time, you will have a shortage of magicka/stamina in fights. There are several ways to distribute these points. In this guide I will go over the following parts of my assassin build: It is how I designed my character in the last beta sessions, and it worked pretty well This is an extensive guide on the nightblade class when used as assassin.
