Guild Wars 2

Can someone pls give me advice (gear, traits, food etc.) on getting the following achievements:
-5 gambit
-frailty and squeamish
-don’t kill the ooze adds
- and liadri, I seem to mess up phase 2

I tried the ooze with frailty and squeamish, but the I get burst down too fast.
I tried the ooze for the don’t kill adds but they spawn next to the boss so they out-heal me.

Can u add a video if possible.

I’m having the same problem. Most of the challenges seem to be beyond my abilities, and I just need one more achievement to complete the meta. I doubt I’ll be beating Chomper and Strugal anytime soon, so I’m trying to do Blob, Schmob as a guardian. I can beat Subject 7, just not without killing slimes along with it.