I have done this and succeeded 20 times on my Xbox One yet I do not have the challenge. It is on that cliff on Pillar of Autumn in Reach. I have video evidence;
Hey OP, please see this thread for further discussion on the challenge:
https://www.halowaypoint.com/en-us/forums/84ad72a8b51847978545f685f651fc15/topics/because-you-begged/a3b79f15-868b-401b-b216-58cf21abe3dd/posts?page=12#post223