I recently ran a group of young college students in a 0-level "Darwinian" dungeon run. They were used to playing Pathfinder. Oops!
Grimtooth's traps, Arduinian fogs, the infamous and greatly-feared +5/+5 Vorpal Werepizza - you know - the good old stuff. The mayhem was egregious, blasphemous, and extremely horrific. Bodies piled up in droves. Parts scattered far and wide.
Each time a complaint arose, I simply said: "No problem, grab your next character."
Great fun was had by all, and they're now cheerfully awaiting the Grand Release in February. I have become a firm supporter of the Funnel.
Of course "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn" so I might be a bit biased as well.