played in a campaign like that. 3 old guys, a teenage girl, in a post-apocalyptic world using a hybrid of dark heresy and whfrp. we got good at one-liners. we also got good at utterly devastating anything in our way.
"what did you feel when you murdered the druglord?"
"recoil."
"here's something medicinal for you!" *throws molotov cocktail made out of moonshine*
*gets attacked by a group of velociraptors* *deadpan* "talk about a crappy day."
"you *pistol whip* don't *leg sweep* hit *curb stomp* my *dislocate shoulder* dogs!! *execution*"
"oh, this has got to die..."
"it's gonna take a bit of killing, that." *cycles sniper rifle*
"we getting breakfast afterwards?"