Gonna try to post a video about it. I clear Susano dummy with roughly 25~ seconds left.

I open with Tridisaster followed by Ruin II -> Rouse + Enkindle -> Ruin II -> Shadow Flare + Fester -> Ruin III, Ruin II -> Fester + Aetherpact (only with party) -> Ruin III, Ruin II -> Fester -> Ruin II -> DT + Tri -> Ruin III spam...and follows but don't want to bore you XD.