First off, Welcome aboard the absurd damage primed parasoul can give! She's probably going to carry you through the rest of the storyline stages that dont have stipulations against gold, and will carry you to 7+ win streaks in prize fights.
Second, Valentines stun syringe proc rate increases the more you level it up. Mine is lv 6 so it has a proc chance of 50% at the moment.
Oh if it gets to 100% at max perhaps I can be convinced to spend money for a gold Valentine
Having that unconditional combo extend is really dirty.
Also thanks to parasoul I'm 2 stages away from 100%ig the story mode.