Talk:Riven Mods/@comment-130.68.183.129-20161117172319/@comment-26841482-20161117191057

Go and do a void exterminate with another player. Kill all enemies except for the scan target and be sure to NOT to use any abilities, both you and your partner, for the whole mission. When only the scan target is left, you can scan it while your partner keeps it immobilised by performing ground slams with melee.

Well, that's how my friend and I did it. He couldn't take any damage, either. Or, he failed the challenge.

But, I don't think that applies to your challenge.