STRUN PRIME BUILD FOR DAILIES/FUN

This is a raw damage build. It can melt Heavy units with some buffs and can also oneshot certain enemies. It can do good on the first 10-30mins on a SP survival. I didn't test if it can go further but you can try for yourself :)

[Harrow] or [Mirage] is really good for this build.

It was mostly made to do sorties or random missions on your daily basis.

Best mod here is Primed Tactical Pump. That can change everything on your gameplay and doesn't make the shotguns a boring weapon.