I hear hard-core (or whatever the name is) takes more skill... (Im guessing monsters are harder, but dont know for sure). The Hack-n-Slash mode doesnt require much if any.
If thats true than I want to play hard-core, but I remember the hard setting on DD and how its near impossible. I dont want to make it a couple hours into it only to find an imossible boss fight or unique monster like in DD.