I returned to the game about 2 weeks ago, received the Recruit set aswell and went in for some action.
Yes, I agree your very squishy and die quickly. But on the other hand, you should try (I know you sometimes cant) to pick your battles. Dont rush in like Rambo, but take it easy and slow. You'll get there.
2 weeks of casually playing and I almost have a complete WH set + augments. You really just have to stick to it and get it over with and it will all get better.
(I still get my butt handed over to me, but hey, we all do