OSRS Youtuber Settled started a new series where he will delete his account ("permadeath") if he takes any damage. You can see the videos here: https://www.youtube.com/watch?v=baF8tBQAX-s&list=PLWiMc19-qaA3CIAJundm6OrnRYImPMk9r
Feel free to suggest answers in the comments. I've disabled third-party answers to prevent spam, but I'm willing to add most suggestions.
@Multicore Resolves YES: https://www.youtube.com/watch?v=2BBSLWp3r9U
@JureSmolar I haven't watched the episode yet. I was planning to resolve the "end of the series" answer when the next episode drops and the death risk answer after watching this episode.
@jskf Any account that's on Nightmare Mode during the series (so, not one of those segments where he tries something on a normal account first to be safe)
@Multicore if you have more I can just turn on third party answers for a bit if you want. I just don't want to leave it on permanently.