It helps to play normal first and focus on the timing rather than the visuals, and then apply this to Hard.Or just start on hard and being that this would then be the first you know, it should be easier to learn.I would recommend running about Act I at night killing Barghests and getting your...
A quick forum search using the search function directed at this and/or the tech forum only would quickly have answered your question. I suggest that you make use of it before starting new threads.And yes, it is save-game compatible.
Certainly works both ways :D(and yes, please respect the filter - the game might be for over 18s, but the forum is open to all above the age of 13, especially the Versus section. We don't want CDPR to get sued by angry parents now, right? :))
Sapkowski should be happy that CDPR brought his works out to the world and won him so many recognitions since. Maybe he will not be quite as grumpy when asked about The Witcher game in future interviews :D