Blood Money system - The cleaner the hit, the more money you receive -- spend it on equipment, weapon upgrades, information and bribing witnesses to reduce your notoriety
Improved AI makes the game more challenging -- guards will follow blood trails, investigate suspicious items and behavior
Agent 47 has a number of new moves and can now climb, hide, scale ledges and automatically pass low obstacles
Customizable weapons - Modify for sound, rate of fire, damage, reload speed, accuracy and zoom
New gameplay techniques - Distract enemies, make your kills look like accidents, dispose of bodies in various ways, use human shields & plant decoy weapons
