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. :)