FYI the scene this is from. If you "so bad it's good" media I highly recommend Danger 5. It's one of the very few things to initially try that and pull it off.
A lot of evil playthroughs require kitten-eating miniquest, were you have to suck the souls of forsaken orphan children or massacre cute things. I'm way too much of a softy to harvest Little Sisters
Curiously the Vader-grip in the Jedi Outcast series allowed me to disarm foes without killing them, allowing me to pacifist my way though entire levels that were meant to be cleared.