I haven't seen much shotgun builds that involve Evangelo so why not make one, i tried it on act 3 nightmare and it surprisingly works, i even clutched Cabins by the lake gate event as the last person standing. I also recommend having good headphones to hear mutations more clearer otherwise you would be melted away, and just have general good self awareness (you won't need ADS if you use shotguns and gives the good ol' L4D vibe too).