Last Wish Challenges have been buggy for years I once made a post about it, explained with evidence and Bungie had done nothing The explanation: Even if the weakly challenge displayed is Which Witch in Last Wish, this does not have to be the active challenge For each player each week it is random which challenge is active (sounds strange, but that's the case) I once did Last Wish after the rework and 2 of us got 1st Encounter Challenge, the other 4 got the 3rd Encounter Challenge The proof I added back then in my old post: I had helped a colleague to help 2-3 new people at Riven+Heart (their first run) At that time, the 2nd Encounter Challenge was active and 4-5 of us got the Riven Challenge The proof back then was the new guy, he had never been in the raid before, only in the week when the 2nd Encounter Challenge was active (could be seen via raid report) Although it was his first time ever in the raid and the 2nd Encounter Challenge was active, he had completed the Riven Challenge, which was actually sufficient proof But my post was ignored So as I said, it doesn't matter which challenge it is, each one can be active and it is random for each player Like for you, one of the other challenges is active this week for you, try around and one of them will give you the Challenge Triumph and the extra loot