First of all, it was amazing from start to finish. V is a bit weird to play as but nothing really felt frustrating or bad, and even with V I actually enjoyed the Geryon Knight and the 3 boss thing in M14. The frequency of checkpoints that allow you to suspend missions and skipping over item use to directly ask you how you want to deal with defeat go a long way in reducing frustration I think. The fully moveable camera and floaty jumps/dodges make life easier too.
King Cerberus actually made me really erect. Both the boss and the weapon but mostly the weapon. My favourite DMC3 weapon now has air hike, 2 extra elements and a whole new SM moveset? Motivates the hell out of me. I know people
