For modern hardware, this game is extremely lightweight and can run on almost any current machine.
Unlike its predecessor, disguises are no longer perfect; guards may become suspicious if you get too close or act erratically. PC System Requirements (2002 Original)
Missions offer open-ended environments where players can choose multiple approaches, such as poisoning a target, sniping from afar, or staging an "accident".
New items like the anesthetic (sedative) allow for non-lethal takedowns, while the updated map provides real-time tracking of NPC movements.
This game introduced the iconic rating system that rewards players for completing missions with zero alerts, no civilian casualties, and only the targets eliminated. Key Gameplay Features