Another puncture build? Daring today, aren't we?
You can give this build a try without changing forma from a typical viral slash build without [Hunter Munitions].
With the puncture buff, you can achieve a 43% crit chance.
Coupled with the damage bonus both puncture and corrosive have against armoured units, the majority of this build's damage comes from the bullets themselves rather than slash.
Primary Deadhead is the best arcane here because of the headshot damage to bring more upfront direct damage.