Omen of Sorrow - Blessed 99 Hit Combo (featuring Adam!)
The input you have to do, really, REALLY fast: EXx2 (Blessed Mode - Full Meter), 236LP, 236HP, 236LP, 236HP ... etc, etc.
The left side variant would be 214LP, 214HP.
This game is truly cursed, and is, in no way, blessed at all. I'm sorry, everyone.