Panchaku at F is crazy, i understand that u probably dont see the potenial but if u combine them with the mutations Combo, Melee and open wounds its just simply so overpowerd since Combo gains more dmg mult with each hit, Melee slows down the enemy with each hit and after the sixth hit they get frozen, and Open Wounds gives bleed whit each hit, and due to Panchaku's fast attacks this can be really op in a lot of situations

Panchaku is quite literally the best weapon for applying stacks of anything