Ok so I tried doing crucible with atheons and honestly it sucks. Just run with a good fusion or shotgun and a rocket launcher. It takes a while if you're not used to PVP but it's doable. Just be cautious. Do control on crucible. Esp now since all the better players are doing iron banner. If that still doesn't work... Find 5 people willing to help you and do rumble till your eyes bleed. Have them die to your weapons and not kill you. Prolly the easiest way to complete this bounty. I did it with a brand new suros not upgraded at all, a fusion rifle, and a rocket launcher. On my void walker.