Need help with Commander of Argus


I need help killing my last 4 targets for Commander of Argus which are the following :

-Squadron Commander Vishax
-Doomcaster Suprax
-Rezira the Seer
-Mother Rosula

I know I can cheese some of them but it would be easier if I could just party with someone who have access,

I would be forever grateful,

Let me know,