When the physical release of Hitman drops on January 31, so too will a new difficulty that io-Interactive is affectionately calling "Professional" difficulty. This will be part of the free January update for everyone that owns the game.
The new difficulty level introduces strict item rules so players will be noticed carrying suspicious items, disguises that can be ruined depending how you take out the NPC wearing them, new security camera rules, limited save games and a whole lot more. Everything needed to challenge even the top players. To unlock Professional Difficulty Level players will need to reach Mastery Level 20 for each location and there are separate leaderboards between difficulty levels. Professional Difficulty Level will be available for all main Story missions only, excluding Prologue.