If your beloved challenge is being reduced, you can just create your own. Go into the fight missing some gear, don't use food buffs, remove Protect from yourself. If you play using mouse/keyboard, switch to controller without practicing. If you play with controller, play using the controller upside down. Are you right-handed? Move the mouse to the left side of your keyboard. You don't have to whine and cry about the game not being challenging enough when there are all sorts of ways to make it more challenging for yourself if challenge is what you want.