: The game increased Agent 47's running and sneaking speeds and reintroduced the ability to jump across balconies.
: Peeking through keyholes, lock picking, or opening doors.
: A Rifle Case was added to discreetly carry the W2000 Sniper Rifle, and the syringe replaced the previous anesthetic, sedating victims for approximately ten minutes.
: Enemies work in teams to outmaneuver the player, and suspicious actions—like running excessively or standing too close to guards—will trigger a Suspicion Meter that can lead to open combat.
: The in-game map was updated with new icons and the ability to distinguish between living and dead NPCs.
: Dragging unconscious or dead NPCs to hidden areas to avoid detection.
The game also expanded on "context-sensitive actions," where a single button can perform various tasks depending on Agent 47's proximity to objects or NPCs. These actions include:
A significant feature introduced in (2004) is the Circular Inventory Menu , which allows for a more fluid selection of weapons and equipment compared to the list-based menus of previous titles.