The Nightwave Act named Silent Eliminator did not count for me. The first time, I was host, and the other two people in my party got credit for it. The second and third time, I was solo as Ivara in Adaro, steath with silent weapon the whole time.
Thanks DE. I am not salty about the riven disposition changes. (I was before in the previous riven disposition changes because I had become so attached to my rivens to an unhealthy extent. I've stopped obsessing about kuva runs now, and that's been a good thing.) I'm happy with how you listen to the community and makes changes with consideration based on the tremendous amount of input. Thanks for providing me with so much entertainment.