Not directly i think, but there are some mods out there witch increases the difficulty. Like Harder Mode. Would recommend using More Enemys and +100% Dmg and / or Healt. Maybe Healpotion restriction to 5 or 10 but you can set the cooldown for enemys Protego down, so they do it more often. But its there normal Colored Protego. Not a Block as u mean i think.