Its impossible to do this rune as pug, no one wants to spend so much time for nothing. I understand that some people have guildmates who can help them do this rune, but for guildless people (thats also a big part of players) its almost impossible to do! My suggestions are (do at least 1 of 2):
- Remove 2hour duration so you can collect echos on normal runs 1 by 1 (because jars needed for it are unique and u can make only 1 echo per run without spending other party members time), and when collect all 8 echos after 8 runs (or earlier if you are lucky), you can just use them and get this rune.
- Make jars non-unique. So just do normal full run Live->UD and then you can use them solo, without spending other party members time.
Making a rune that force other party members to spend time for it (even if they are not interedted) is not cool! Because you either must have friends that help you to do it (not all people in this game have 4 friends that can spend 1 hour time and help you for free), or pay gold to help you do this and this encourage rmt.