Build: https://i.imgur.com/ZagPirI.png
I didn’t have all perfect gear for this clip but still did over billion damage.
1. Use weapon with Shield Maiden to max Shield
2. Switch to one-shot rifle and hit 3 crits
3. Use Venator’s Knife and Hunt the Prey
4. Activate Twisted Rounds and hit a non-crit for the kill
For the weapon with Shield Maiden I recommend something with decent mag size, long range and high RPM for stacking Shield fast. Double Gun is great for this but pistols or LMG are good too.
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Always running the one shot build to play around. I like it. Miss playing the game for sure.