Korean characters look like runic words to me. Google translate make it worse. But I saw something 15-25k crit, dunno which skill. The player was bugged on my lap.
Skull Swing was used before (the distinct sound of SK can’t be missed) and then either Redel or Zucken with attributes. I assume that’s a High Str Doppel.
Either way, we still need more info before making assumption.
PS: I got another Peta today. Praise Rngesus