Kingdom Come: Deliverance II will feature a hardcore mode with up to ten negative perks that add extra challenges. These include reduced XP gain, faster hunger, louder footsteps, and even random sleepwalking. Players seeking a brutal experience can enable multiple perks, making survival significantly tougher.
Source: N4G PC KCD II Hardcore Mode Adds 10 Brutal Perks, Including "Punchable Face"