Dark Urge made it easy for me. I kept wanting to do an "evil game" but would always lose heart and pick the nicer choices.

And then my group made me the Dark Urge character on a different playthrough. And once I realized some of the evil shit was beyond my control, I just kinda said "Fuck it" and went evil as possible.

10/10 recommend. It's so OTT it's hilarious.