At the moment i'm typing this, every Shelly run starts with gem grab and at 30 trophies they switch to (the better game mode for speedrunning) solo showdown. If u connect a Supercell ID to the account that you want to speedrun Shelly on , you get barley + a skin. This means that u can get barley to 30 trophies to unlock showdown, then u can do all your Shelly trophies on showdown what should be way faster. :)
I think these are all non millisecond runs :)
Shelly 50 trophies 3rd place (Me) 11m 28s 4th place (Hyperlexus) 15m 37s 5th place (Akja)16m 08s 6th place (Integeek) 16m 29s
Nita 50 trophies 2nd place (me) 9m 36s 4th place (Integeek) 12m 59s 5th place (Akja) 14m 17s
Crow 50 trophies 2nd place (EmperorAlexand) 23m 45s
5000 trophies 1st place (Ash Brawl stars) 23h 41m 00s don't know if this 1 needs ms cause its so long
Kill% 5K-10K 2nd place (Nathanial123060) 07s
Survival% Solo% 6th place (Natmando) 2m 15s 9th place (espion175) 1m 54s
Survival% Duo% 1st place (Akja and M-work) 2m 37s
Showdown% 2K-5K 1st place (a2i3r_012) 1m 23s
Showdown% 5K-10K 2nd place (Vakala) 2m 10s
Duo Showdown% 5K-10K 1st place (Vakala and grzybekigi) 1m 21s
Duo Showdown% 10K+ 1st place (Hawkeyes and A online player) 49s
If u need someone to do some re-timing, i'm always down to help!