I refuse to play any difficult game where the penalty for dying to a boss is to have to go through the same section of enemies again and again.
Either let me retry the boss battle from where I am with my current health / status going into the battle or put me < 1min away from the boss. Anything else just builds up a sense of "this game is wasting my time", even if it's not actually taking that much time overall. Clearing these types of scenarios with dedication just ends with feelings of relief and not as much triumph, compared to clearing hard scenarios that you can quickly retry.
Too much talk in here about difficulty and not
how
the punishment for failure works.
'Just sitting around the house tonight w my dog. Felt like I should be doing something important, but couldn't put my finger on it.' - Phil Kessel on USA snub