Sigh...
I killed both on lvl 8. All I had to do was to be sure that all my equipment was level appropriate. I was killed by Gutsripper, but then I adjusted my strategy, equipped a bow and killed it easily.
With Dosha, I just kited her around and used CC. She could barely touch me. I didn't die against her.
Really, people, it is not that hard. You just have to stop and think about what you are doing wrong and try again.